Showing posts with label Space Station. Show all posts
Showing posts with label Space Station. Show all posts

15 January 2021

Space Station ambitions

A PROPOSAL by Asgardia, the space nation, to build and supply a new node module for the International Space Station (ISS) is revealed in an exclusive article in the winter issue of the global space industry publication ROOM Space Journal.

Asgardia - represented by three Austrian-based legal entities, Asgardia Terra Ark (ATA) NGO, Asgardia Financial Ark (AFA) AG and Asgardia Independent Research Centre (AIRC) GmbH - has modelled the node on the proven design of existing European-built modules.

Expanding on the idea in his ROOM article, Dr Igor Ashurbeyli, founder of Asgardia and the general designer of the Asgardia node module and the lead of the project, said the module would help extend the capacity and commercial value of the Space Station.

Asgardia has created a consortium of established industry players, including Nanoracks Europe, Thales Alenia Space (Italy), OHB System (Germany) and QinetiQ (Belgium), to develop, build and deliver the module

As well as supporting commercial development and expanding scientific research opportunities, the state-of-art module would ultimately have the capacity to eventually form the core node of an autonomous space station operated by Asgardia.

In his article, Dr Ashurbeyli notes that the limited number of available docking ports and related infrastructure constitutes a major obstacle to the future expansion of commercial capabilities on the ISS.

“To directly address this, Asgardia has proposed the provision of an Asgardia node module that would be integrated into the European part of the ISS,” he says.

Asgardia’s proposal for a new ISS module was submitted in 2020 in response to a European Space Agency (ESA) Call for Ideas entitled, ‘Space Exploration as a Driver for Growth and Competitiveness: Opportunities for the Private Sector’.

Dr Ashurbeyli describes the project as being “very much in line with the goals of ESA’s space exploration strategy”, adopted in 2014 with the strategic goals of scientific advancement; innovation and economic growth; global cooperation; and inspiration.

“It addresses the current limitations in habitable volume and research capabilities, incorporating the much-needed additional docking ports, which would be made available to both agency and commercial customers.”

He says the project is designed to capture investment from around the world, while providing jobs for European industry and offering a path to take European independence in space to a new level.

Asgardia would own the new infrastructure - comprising a node module based on ISS existing orbital infrastructure developed by the European space industry.

It would commercially fund the project via external investment as part of a public-private partnership (PPP) between commercial organisations and ESA.

An initial technical feasibility study would focus on the insertion of the Asgardia node module between Node 2 starboard and ESA’s Columbus, a configuration that best enables the expansion of docking facilities for third party customers.

Development, manufacturing and deployment is planned to take about five years leading to a possible launch in 2026.

The Asgardia node module would also provide functions for autonomous flight, including rendezvous and docking, a capability crucial for the time when, following the ISS end of life, the Asgardia module could be re-deployed as a core element of Asgardia’s proposed Earth Ark, an autonomous space infrastructure that will enable continuous development and research beyond the operational lifetime of the Space Station.

Despite recognising its “technical validity and potential promise”, ESA has for now declined the consortium’s proposal due to what it described as “political and technological risks”, both of which are refuted by Dr Ashurbeyli in his article.

Addressing the widely noted aspect of Asgardia's positioning as a digital space nation, he writes: “As a digital space nation Asgardia is not yet formally recognised by earthly states and so political risks are zero.”

“Technological risks are also minimal given that the consortium members are space industry world leaders and are committed to the project to design, build and delivery. “Asgardia also remains confident that the financial resources for the project can be found in the marketplace.”

The ambitious proposal was first revealed to space industry leaders by Dr Ashurbeyli during the Asgardia Space Science & Investment Conference (ASIC) in Darmstadt, Germany, in 2019.

Dr Ashurbeyli, a Russian scientist, businessman and philanthropist, is the Founder of Asgardia, which is also currently working to launch the world's first national digital economy.

Asgardia's core technical scientific vision is the birth of the first human child in space - a first   step towards the ultimate survival of the humankind as a species in the universe.

To achieve this Asgardia is examining solutions for protecting people from space radiation, creating artificial gravity for fully-fledged life in space, and is drafting laws to create a fair and equitable society beyond planet Earth.

The full article published in ROOM is available to read by clicking here.

12 June 2017

Spy satellite buzzes ISS


AMATEUR satellite observers are keeping a close eye on a US National Reconnaissance Office classified satellite (USA 276) to see whether it returns to the vicinity of the International Space Station (ISS).

After its launch into orbit from Cape Canaveral by SpaceX on 1 May 2017 analysts around the world quickly realised it was doing something more unusual.

Its orbit was similar to that of the Space Station and so could theoretically make close approaches to the orbiting outpost.

Then, just over a month after launch on 3 June, that is exactly what happened. "USA 276 made a close approach and effectively circled the ISS," reported satellite bserver Marco Langbroek of Leiden, The Netherlands. 

Amateur satellite watchers have been tracking USA 276 since late May and their observations have resulted in ever-improving estimates of the satellite's orbit. 

"With the latest data included, we can establish the moment of closest approach as 3 June 2017, 14:01:52 UT. It happened in daylight over the southern Atlantic north of the Falklands, near 43.75 S, 45.45 W, with a miss distance of only 6.4 ± 2 km,” says Langbroek.

In the accompanying chart (prepared by Langbroek) showing the circumstances of the encounter, the brick-coloured box has dimensions of  4 x 4 x 10 km and normally, whenever an object looks like it is going to pass through the box, ISS mission controllers evaluate the possibility of a collision avoidance manoeuvre.

"USA 276 remained just outside the 4 x 4 x 10 km box at closest approach and as a result collision avoidance manoeuvres were not required,” adds Langbroek.

Diagram prepared by Marco Langbroek showing encounter.
The question arises as to why a US spy satellite buzzed the ISS and senior satellite analyst Ted Molczan has published arguments for and against that possibility. "I am inclined to believe that the close conjunctions between USA 276 and the ISS are intentional," he says.

Molczan points out that USA 276 might be visiting the ISS to test Raven - a technology demonstration project on the ISS researchers are using to develop spacecraft autopilot systems.  Raven has visible, infrared and lidar sensors that can track incoming spacecraft, feeding the data to an onboard processor for decision-making about rendezvous and docking.

"I imagine that USA 276 could add to the Raven data set as follows," speculates Molczan. "If it can rendezvous, then it could keep station for long periods, during which it could change its attitude to present the sensors with a variety of views, under a variety of lighting conditions. The total data collected could potentially far exceed that from the other visiting spacecraft."

Another way of looking at the problem, is to ask why, if the ISS is not a target of USA 276, would the highly secretive NRO have permitted a launch so close to its plane, let alone one that yielded such close conjunctions not long after launch, which could only have increased public interest in the mission?

USA 276 looped around the ISS, according to an analysis.
Langbroek says he does not believe for a moment that the NRO was not aware that the launch on 1 May would lead to the ISS close approach a month later. “It would be extremely sloppy of them - from a Space Situational Awareness (SSA) viewpoint - if they were not aware, especially given how close the orbital parameters are to that of the ISS.”

He adds: “This event was sure to attract attention which harms the classified character of the mission. USA 276 is relatively bright and the approach was bound to be noted by independent observers.

“Indeed, some space enthusiasts in Europe unaware of the issue who were out to spot Dragon CRS-11 and Cygnus OA-7 close to the ISS on 4 June, did accidentally see USA 276 passing some three minutes in front of it.

At the time of the launch - and at the request of the NRO -SpaceX cut off launch coverage two minutes and 48 seconds after liftoff, some 30 seconds after the booster’s first-stage separated from the upper-stage. The NRO has declined to provide further details about the satellite or its orbit.

Langbroek also speculates that such a close approach of a high profile object like the ISS is politically risky too.

“As the ISS is an international cooperation which includes two parties (the United States and the Russian Federation) that are currently geopolitically on an uneasy footing, sending your military payload so close to the ISS as one party is eyebrow raising,” he says.

17 July 2014

What's in a name?


British astronaut Tim Peake has named his mission to the International Space Station (ISS) next year after a book by Sir Isaac Newton.

But the name Principia - which refers to Newton's book of mathematical principles Philosophiae Naturalis Principia Mathematica - could turn out to be a pronunciation nightmare.

More than 4,000 people came up with possible names for the mission earlier this year and Principia was suggested 20 times.

When the winning name was revealed yesterday by those who had made the suggestion the ‘ci’ was pronounced with a ‘k’ sound (PrinKipia), in-line with the classical pronunciation of Latin.

Newton himself, an adept Latinist, would probably have pronounced it the same way but modern studies of Newton generally refer to the work as 'PrinSipia'.

Adhering to strict Latin pronunciation standards of old for a 21st century space mission might seem a little irrelevant today - so which way do we go?

Like et cetera, the title of Newton's work has been pretty much absorbed into English and the ‘s’ version flows more naturally in the context of other English words and modern usage.

Principa set out the laws of motion and gravity more than 300 years ago and Major Peake chose the name in honour of its author Sir Isaac Newton, Britain's greatest scientist.

Photo: Clive Simpson

Tim will be launched from Russia’s Baikonur cosmodrome in Kazakhstan in December 2015 and he will spend six months in orbit carrying out scientific and medical experiments.

One of his aims is to inspire children during his stay in space, in particular by promoting healthy eating.

"I am delighted with this name that honours one of Britain’s most famous scientists," Tim said.

"Our planet Earth is a precious and beautiful place and we all need to safeguard it. I hope it will also encourage people to observe the world as if for the first time - just as Isaac Newton did."

Each time an ESA European astronaut prepares to go into orbit it is customary for the public to help choose a mission name.

Names that reflect an astronaut's nationality are encouraged - but they should also have a wider European flavour and be easy to pronounce.

Previous mission names have included Marco Polo (Roberto Vittori, Italy), Delta (Andre Kuipers (the Netherlands), Celsius (Christer Fuglesang, Sweden), Cervantes (Pedro Duque, France), Esperia (Paulo Nespoli, Italy) and Blue Dot (Alexander Gerst, Germany).

Viewers of the BBC children's programme Blue Peter will be invited to design the mission patch for the Principia mission in a competition to be launched in September.

The pronunciation conundrum is, perhaps, a little unfortunate for what is designed to be a popular mission bringing space to a new audience in the UK.

Time will tell exactly how the name of Britain’s most exciting space mission to date will be pronounced - and whether modern usage or tradition will win the day.


The Lighthouse Keeper is written by Clive Simpson - for more information, commission enquiries or to re-publish any of his articles click here for contact information

09 May 2014

Astronaut's view of Earth


The world’s biggest and most spectacular reality show is now available on a laptop, tablet or TV screen near you.

Live pictures from Earth orbit can now be viewed by anyone with an internet connection thanks to NASA’s latest experiment on the International Space Station (ISS).

The High Definition Earth Viewing Experiment (HDEV) started its round-the-clock broadcasts on 30 April and will stream video of Earth from the orbiting Space Station until October 2015.

Footage of Earth is captured by four cameras attached to the outside of the ISS as part of an experiment to evaluate whether commercially available cameras can survive the harsh conditions of space, particularly high levels of radiation.

The cameras - enclosed in a pressurised box containing dry nitrogen to mimic atmospheric pressure on Earth - are mounted on the External Payload Facility of ESA’s Columbus module.

NASA hopes it will be able to use similar, commercially available HD video cameras on future space missions as this will likely be more cost-effective than designing new products.

Video from these cameras is transmitted back to Earth and then streamed live on this ustream tv link - with views typically sequencing though the different cameras.


Viewers should also be aware that this is real space so there is no sound (in space no one can hear you scream) and there are a few quirks to be aware of (please do no adjust your set).

Between camera switches, a grey and then black colour slate briefly appears and, since the ISS is in darkness during part of each orbit, pictures at those times will be dark.

Also, during periods of loss of signal with the ground, or when HDEV is not operating, a grey colour slate or previously recorded video may be seen.

And remember, because the Space Station orbits Earth every 90 minutes there is a sunrise or sunset every 40 minutes.

Analysis of this experiment will be conducted to assess the effects of the space environment on the equipment and video quality which may help decisions about cameras for future missions.

For your own astronaut’s view of Earth plus a display of the real time ISS location, click this link - http://eol.jsc.nasa.gov/HDEV/

10 March 2014

Space without frontiers

Preparations for tomorrow morning’s landing in Kazakhstan of two Russian cosmonauts and an American astronaut continue unabated against a backdrop of increasing tensions over Russia's armed incursion into Ukraine.

And NASA is once again confronted with the nightmare of a potential diplomatic roadblock thanks to its reliance on Russia for transporting its astronauts to Earth orbit and back.

Nearly two dozen NASA officials and medical personnel are in Kazakhstan to greet the three man crew, which is led by veteran Russian commander Oleg Kotov, a native of the Crimea region.

The NASA team joins the Russian-led recovery crew, a fleet of helicopters, fixed-wing surveillance aircraft and all-terrain ground vehicles to quickly reach the Soyuz capsule after it parachutes to Earth.

This month's comings and goings at the International Space Station (ISS) highlight the interdependence of the US and Russian space efforts.
 
Just two weeks after tomorrow’s landing NASA's Steven Swanson is to ride another Russian Soyuz craft up to the station, again in the company of two Russians.

Under current arrangements, NASA astronauts can only get to and from the ISS with Russian help, due to the retirement of the Space Shuttle fleet in 2011 before an alternative US launcher was in place. Russia charges NASA $70 million for each astronaut round trip.

If Russia's confrontation with Ukraine and the West does develop into the worst diplomatic crisis of our generation it could have potential consequences for space exploration, though based on past experience it looks unlikely - at least for the timing being.

NASA Administrator Charles Bolden stated last week that the space station programme had so far been “resilient to international crises” since Russian formally joined the effort in 1993.

"I think people lose track of the fact that we have occupied the ISS now for 13 consecutive years uninterrupted, and that has taken us through multiple international crises," he said.

The three returning space farers – Kotov, his fellow Russian cosmonaut Sergey Ryazanskiy and NASA astronaut Michael Hopkins - have now completed their final weekend of a 166-day mission aboard the ISS.

They launched from the Baikonur Cosmodrome in Kazakhstan on 25 September and arrived at the 450-ton orbiting outpost six hours later.

The first phase of their return to Earth starts this evening when they will enter their Soyuz TMA-10M capsule and close hatches with the space station at around 2045 GMT.

Undocking is set for two minutes after midnight, followed by a burn of the Soyuz rocket thrusters at 0230 GMT to slow the craft's velocity enough to fall back into the atmosphere.

Touchdown - southeast of the town of Dzhezkazgan in Kazakhstan - is scheduled for 0324 GMT (0924 am local time at the landing site).

03 March 2014

Gravity - it's the real thing

The technical prowess of Alfonso Cuarón's sci-fi drama ‘Gravity’ meant it took seven Oscars at the 86th Academy Awards last night, including visual effects, sound editing, sound mixing, cinematography, editing and original score. 

In the Warner Bros movie two astronauts find themselves adrift in space and struggling for survival after their spacecraft is destroyed by space debris. 

The scenario makes for gripping Hollywood entertainment and is not million miles from reality - NASA actively works to protect its astronauts and vehicles from such dangers and has occasionally had to adjust its orbit to avoid colliding with items in its path.

From protective material coating the outside of the International Space Station (ISS) to meticulous training on the ground and in space, covering everything from spacewalking to fires or decompression inside the station itself, NASA's ground crews and astronauts are as prepared as they can be for potential anomaly.

Back in September NASA astronaut Cady Coleman (Expedition 26) spoke with actress Sandra Bullock to discuss Bullock’s character in the movie. The two had previously conversed while Coleman was onboard the orbiting space station.

Sandra Bullock in the Oscar-winning 'Gravity'.
Of course, featured alongside Bullock and George Clooney, ‘Gravity’ has another major star - the International Space Station itself. 

Look closely during the film’s interior shots of the space station and you may get a glimpse into what’s really going on 240 miles above Earth. 

To focus on the facts behind the fiction, Coleman recalled her own experience living and working in space aboard the orbiting laboratory after an advanced screening of the film.  “This isn’t a documentary - it’s a movie,” she said.  “It transports people from this planet into space. I am really lucky, as an astronaut, to get to go and live there.”

Observant viewers of the movie may have noticed that free water forms spheres in space. Although special effects helped this occur in the film, this is a true phenomenon and is the result of surface tension.

Onboard the space station and experiment called the Capillary Flow Experiment (CFE) is helping predict liquid behavior in microgravity. 

Such findings provide help improve ground water transportation on Earth, better cooling capabilities for electronics using heat pipes, as well as benefiting the design for fuel tanks in spacecraft for long duration exploration.

Fire also plays a role in the movie, and two studies underway on the space station touch on this topic - the Burning and Suppression of Solids (BASS) investigation and the Flame Extinguishment Experiment (FLEX). 

Findings from BASS may contribute to improved fire suppression methods for spacecraft and FLEX may lead to improved fuel efficiency on Earth and minimise pollutants associated with combustion in Earth’s atmosphere.

Space station research will continue for years to come as the findings from the many studies build on the current collection of human knowledge. The work done aboard the ISS goes far beyond entertainment value, Coleman pointed out, touching on the nature of the human spirit. 

“Our planet sits in a neighbourhood within the universe, and we are all space explorers," said Coleman. 

"I think space movies, in general, bring that message home to us. Whether we live with our feet on the planet or whether we live on the space station, we are all space travellers and we are a people of space exploration.”

A bright sun greets the International Space Station in this view from the Russian 
section of the orbital outpost, photographed by one of the STS-129 crew members in 2009.

13 January 2014

Space Station top ten

The Obama administration has given NASA the go-ahead to operate the International Space Station (ISS) until at least 2024 but many of its scientific achievements to date remain largely unsung to the population at large. 
The US decision means partner agencies, US government establishments and private-sector researchers from around the world can now count on at least another decade of orbital operations.
Bill Gerstenmaier, chief of space operations at NASA Headquarters, said the expanded lifetime will encourage increased commercial use of the lab complex, solidify the commercial launch market and provide critical insights into technology development and human physiology needed for eventual flights to deep space targets like Mars.
But what of the scientific value of such a challenging, and ultimately costly, enterprise like the International Space Station?
In September at the 64th International Astronautical Congress (IAC) in Beijing, China, delegates were treated to an inspiring presentation by NASA’s Dr Julie Robinson, International Space Station Program Scientist at the Johnson Space Center (JSC).
Dr Robinson, who coordinates the International Space Station (ISS) science programme and is author of ‘ISS Benefits for Humanity’ (published by NASA in 2012) spoke on the ‘Top 10 Research Results from Space Station’.
She provided historical context to her personal choice by stating the fundamental reason humans explore is not being motivated  by the advancement of science.
“Early explorers travelled the world to exploit economic opportunities not to inspire their children about it,” she said. “Explorers are responsible for pushing the boundaries and the scientists follow behind.”
Dr Robinson described the ISS as “the most complex machine ever built by humans” and told delegates that it was easy to be “uniformed” about some of the great results coming from the Space Station.
“The Space Station is unique in that it supports almost every scientific discipline in some way,” she explained.
“Ultimately it will be judged on its engineering achievements, international achievements and science achievements. We are now in the research stage and this is very important to our stakeholders - 69 countries have participated in ISS utilisation so far.” 
In selecting a personal ‘top 10',  Dr Robinson took into account a variety of criteria - scientific journal quality, comments and reviews by other scientists, cases where novel information was presented, and benefits to humankind - all of which she described as important considerations in terms of research legacy.
Number 10 - preventing loss of bone mass in space through diet and exercise; if astronauts do the right set of exercises, have the correct amount of vitamin D and calories in their diet then they come home okay. Resistive exercise now helps treat osteoporosis cases on Earth.
Number 9 - understanding the mechanism of osteoporosis and developing new drugs to treat it. The first new drugs for treating muscle waste are now on the market as a result of research in microgravity.
Number 8 - Hyper-spectral imaging for water quality in coastal bays. A ‘gold standard’, according to Dr Robinson, which also allows scientists to distinguish between sediment pollution on satellite imagery.
Number 7 - Colloid self-assembly using electron fields for nano particles, a process which is impacting manufacturing processes on Earth.
Number 6 - New process of cool flame combustion - an unexpected and novel result. In microgravity, flames burn differently forming flaming spheres that turn out to be mini-labs for combustion research. Unlike flames on Earth, which expand greedily when they need more fuel, flame balls let the oxygen come to them.
Number 5 - A pathway for bacterial pathogens to become virulent; bacteria can become more virulent in space. Studying this helps develop new treatments and is an example of where biological science can make a significant advance by going into a different environment.
Number 4 - educational outreach, with 43 million students from all over the globe.
Number 3 - Dark matter is still out there according to the first data gathered from the ISS Alpha Magnetic Spectrometer (AMS) the most sophisticated detector of gamma cosmic rays that has ever been built.
Number 2 - Robotic assistance for brain surgery - the technology that went into developing neuroArm, the world’s first robot capable of performing surgery inside magnetic resonance machines, was born of the Canadarm.
Number 1 - A new targeted method of chemotherapy drug delivery with medical trials now underway as a result of ISS medical developments. It involves a single step process forming tiny liquid-filled, biodegradable micro-balloons containing various drug solutions (a process called microgravity micro-encapsulation) that can provide better drug delivery for tumours.
Dr Robinson concluded: “The benefits I have selected serve as examples of the Space Station’s potential as a ground-breaking scientific research facility. 
“The ISS advances the state of scientific knowledge of our planet, looking after our health, and providing a space platform that inspires and educates the science and technology leaders of tomorrow.
“These benefits will drive the legacy of the ISS as its research strengthens economies and enhances the quality of life here on Earth for all people.”


The above article is based on one of a series of daily reports from the International Astronautical Congress 2013 held in Beijing, China, written by Clive Simpson for the Paris-based International Astronautical Association (IAF) and first appearing on the IAF website

26 November 2013

The Age of Miracles

Karen Walker-Thompson's novel ‘The Age of Miracles’ is not an obvious literary award winner though it is a compulsive read and contains a number of interesting themes and challenging ideas - all introduced as the result of the phenomenon of Earth’s rotation slowing.

My previous blog ‘How fragile we are’ looked at the novel’s apocalyptic catastrophe theme - the dire consequences to all life on Earth as a result of the planet’s rotation gradually slowing and therefore extending both day and night.

But there are more subtle implications also to be considered when looking at the effects exaggerated daylight and dark hours might have on the normal working of our own bodies.


Midway through the book at the beginning of chapter 17, Thompson-Walker writes: "Two thousand years of art and superstition would suggest that it is darkness that haunts us most... but dozens of experiments conducted in the aftermath of the slowing revealed that it was not darkness that tampered most with our moods - it was light."

The implication, though not the cause, of night turning into day is not a million miles from the theme adopted by The Lighthouse Keeper for two of this autumn’s blog essays - ‘Fear of the dark’ and ‘Blinded by the night’.

It is now well-established by the medical profession that working through the night and the influence of light after dark can affect our circadian rhythms and long-term health and well-being in significant ways.

In his 2012 paper ‘Light Pollution, Nuisance and Planning Laws in the UK’ Martin Morgan-Taylor, principal lecturer in law at Leicester’s De Montfort University, states that artificial lighting is known to cause "some fairly obvious negative effects on human health and well-being" - in as much as floodlighting or illuminated advertising hoardings may disturb sleep by shining in bedroom windows.

"Indeed, it may be thought that sleeplessness may cause only temporary or negligible problems, but medical research is increasingly linking artificial light at night with some serious health effects, such as cancer and depression," he says.

"Other research indicates that artificial light at night may general disrupt human circadian rhythms."

In addressing the question of why this might by the case, Prof Morgan-Taylor pins the likely cause on what is known is that ‘white’ or ‘blue rich’ lighting, which mimics natural daylight and is being increasingly used at night.

"This type of light particularly suppresses the production of a circadian rhythm hormone called Melotin, so disturbing circadian rhythms," he states. Melotin is believed to be a powerful anti-oxidant that helps to ward off some human cancers.

"In other words, an avoidable exposure to ‘white/blue rich’ light at night may increase a person’s susceptibility to some cancers - and we are increasing our use of this form of lighting at night," he adds.

In ‘The Age of Miracles’ the world at large is thrust into ever-lengthening days and nights as Earth slows gradually from its standard 24 hour rotation.

At first the consequences are manageable, more of an inconvenience, but as the daylight hours stretch into periods of 30 and then 40 hours, and likewise the night, the effects on daily life become ever more pronounced and difficult. 


The terminator dividing day from night across Earth as seen
from the International Space Station.

The novel takes the concept of our bodies adapting to unnatural light patterns to a whole new level - but in considering current light pollution levels across the developed world (in England it increased by 24 percent between 1993 and 2000) the extrapolation is valuable.

The first chapter of Genesis in the Bible states that God ‘divided the light from the darkness’, which in Biblical terms can be viewed as both symbolic as well as being a statement about the natural environment. In essence we need them both because light allows us to see and darkness gives us an opportunity to sleep.

By lighting our neighbourhoods, towns and cities to excess and flooding our yards with unnecessary light we are wasting energy and undoubttedly contributing to climate change. In a more subtle way we may also be tampering with the laws of nature - and perhaps even creation itself. 

02 October 2013

Fear of the dark

Even lighthouse keepers - at one time true custodians of light - are an endangered species these days, their solitary and lonesome existence largely replaced by automated and computer-controlled systems.

But just as technology has seemingly usurped most aspects of human endeavour and experience - including the once dark night-time skies in the heavens above - the UK’s cross channel neighbour has, as it were, ‘seen the light’. Vive la France!

At the end of August, as its populous was returning to work after ‘les grandes vacances’, the whole country grew darker through the night as one of the world’s most comprehensive lighting ordinances came into effect.

Now, in the early hours of every morning between 1 am and 7 am, shop lights are being turned off and lights inside office buildings must be extinguished within an hour of workers leaving the premises.

Lighting on France’s building facades cannot be turned on before sunset and, over the next two years, new regulations restricting lighting on advertising hoardings will also take effect.

These rules are designed to eventually cut carbon dioxide emissions by 250,000 tons per year, saving the equivalent of the annual energy consumption of 750,000 households and slashing the country’s overall energy bill by 200 million Euros a year.

But, according to France’s Environment Ministry, no less a motivation is to ‘reduce the footprint of artificial lighting on the nocturnal environment’.

This is a powerful acknowledgement that excessive use of lighting is not only consuming too much energy but is endangering our health and the health of the ecosystems on which we rely.

Researchers are now focusing on the impacts of so-called ecological light pollution and warn that disrupting the natural patterns of light and dark - and thus the structures and functions of ecosystems - is having a profound impact far beyond what we realise.

It’s a global problem and is worsening by the month as countries like China, India and Brazil become increasingly affluent and urbanised.

Views of Earth at night show vast areas of North America, Europe, the Middle East, and Asia glowing with light. Only the world’s remotest regions - Siberia, the Tibetan plateau, the Sahara Desert, the Amazon, and the Australian outback remain cloaked in darkness.

Some countries, including the UK, have enacted limited regulations to reduce light pollution but in reality most nations and cities still do little to manage our excessive, almost compulsive, use of light.

The photographs below show the UK and London at night as seen by astronauts on the International Space Station (ISS). It serves as a poignant illustration of the point in question - namely that as both individuals and nations we are using far too much artificial light with little or no consideration for either cost, the environment or our own health.






As the autumn nights draw in, this is the first in a series of short Lighthouse Keeper essays looking at the impact of artificial light at night in our modern world. The title draws from Gordon Giltrap’s classic 1978 album ‘Fear of the Dark’ which was re-released in 2013 and is newly remastered from the original tapes, including eight extra tracks drawn from a series of singles released between 1978 and 1980. ‘Fear of the Dark’ , a Lighthouse Keeper 'top ten' album, saw Giltrap backed by a band of outstanding musicians: John G Perry (Bass), Rod Edwards (keyboards) and Simon Phillips (drums) and featured many outstanding tracks. 

For more articles in this series search under 'artificial light' on the adjacent tag cloud.


01 June 2012

Dragon's historic test flight

SpaceX is due to begin regular cargo flights to the International Space Station at the end of the summer - and its Dragon spacecraft will be the only craft on the lab's roster of servicing vehicles able to return significant hardware to Earth.

Formal reviews this month after a flawless nine day test flight in May are expected to clear the way for SpaceX's first operational cargo mission sometime in September.

SpaceX's commercial Dragon spaceship made an automated pinpoint splashdown in the Pacific Ocean, completing a feat never before achieved by private industry.


The gumdrop-shaped capsule, blackened by the heat of a high-speed re-entry, splashed down in the Pacific Ocean about 560 miles west of Baja, California, at 1542 GMT.

The Dragon spacecraft became the first privately-owned vehicle to fly to the Space Station, notching that triumph May 25 at the end of a cautious laser-guided approach to the complex.

The capsule also became the first US spacecraft to reach the Space Station since the last Space Shuttle flight departed in July 2011.

With splashdown on 31 May, Dragon proved it could fill a void left after the Shuttle's retirement in returning experiment samples, broken components and other excess hardware to Earth.

The Dragon test flight launched from Florida on May 22 aboard a Falcon 9 rocket. Three days later, after a flyby to demonstrate rendezvous techniques, the spacecraft precisely flew within 30 feet of the Station, close enough for the crew inside the complex to grapple Dragon with a robotic arm.


The astronauts unloaded more than 1,000 pounds of cargo from Dragon's pressurised compartment, including food, clothing, student experiments, and computer gear. The crew installed more than 1,300 pounds of equipment back inside Dragon for return to Earth.

After six days attached to the complex, Dragon was released from the lab's robotic arm at 0935.

SpaceX flight controllers at the company's headquarters in Hawthorne, Calif., commanded the ship's thrusters to five for nearly 10 minutes a few hours later. The thrust slowed Dragon's speed by more than 200 mph, enough for its orbit to drop into the atmosphere for re-entry.

The successful conclusion of the test flight capped a triumphant mission for SpaceX, which intends to outfit the Dragon spacecraft for crewed launches and landings within three or four years. SpaceX is competing for funding from NASA to finance the effort.

19 May 2012

Back to basics for US

A private space company attempting to make history today by firing its Dragon space capsule into orbit en route to a rendezvous with International Space Station had its launch aborted in the final seconds of liftoff.

The launch of the Falcon 9 and Dragon has been strictly downplayed as a ‘test flight’ by SpaceX officials and NASA observers. But a lot rests on its successful outcome which could buoy or blunt future political support for a private US space race in human spaceflight.

A year ago the iconic buildings and launch pads at Kennedy Space Center, Florida, were still a hive of activity and excitement as NASA and the US remained enraptured by the final launches of the Space Shuttle programme.

This morning’s dawn launch preparations took place far away on a dedicated launch pad and SpaceX preparation area at Cape Canaveral Air Force Station. A new launch attempt is now likely to be made on Tuesday.


Pre-dawn view of Falcon F9 and Dragon on launch pad.                       
I visited the SpaceX site last summer when the company was keen to show off its facilities and give us a close up view of the launch pad as it was preparing for an end of the year Falcon 9 launch.

Up-close view of a Falcon F9 rocket for the Lighthouse Keeper.             
If fully successful, this new mission will be a big confidence boost for SpaceX and NASA, which are partners for at least 12 unmanned cargo delivery flights to the Space Station over the next few years.

It will also edge the US a little closer to regaining its ability to launch humans into space - a capability it had maintained for five decades until the final launch of the Space Shuttle last summer.

NASA has paid SpaceX $381 million in an agreement to help pay for the design, development, and testing of the Falcon 9 rocket and Dragon spacecraft. SpaceX has spent $1.2 billion to date, including public and private capital.

NASA and SpaceX are also jointly funding the design of a crewed version of the Dragon spacecraft to transport astronauts to the Space Station later this decade.

Upper part of SpaceX rocket in assembly hanger.           Clive Simpson
Flown Dragon capsule on display in Florida.                Clive Simpson
But SpaceX still has to compete with other aerospace companies for further NASA financing to support development of rockets and spacecraft for human occupants.

"We know this has been touted as a huge mission," said Gwynne Shotwell, SpaceX's president. "We keep trying to say it's a test. Nonetheless, it's a big job. Success is not going to mean success of the commercial space industry, and failure is not going to mean failure of the commercial space industry."

Shotwell told a press conference at KSC the day before the flight that the most important outcome of the Dragon test flight was to learn from it - as the spacecraft's solar arrays, navigation and rendezvous sensors, and flight computer were all new.

Politically the flight comes at a crucial juncture just as budget decisions are about to be made in Washington.

Success will prove it is possible for SpaceX and other commercial operators to do the work NASA has advanced since the 1960s.

The mission is crucial for International Space Station operations. Assuming all goes well, SpaceX intends to launch its first, fully loaded cargo resupply mission to the station in mid-August.

Another company - Orbital Sciences Corp - has a $1.9 billion contract to launch its Antares rocket and Cygnus spacecraft on eight cargo missions.

Orbital plans to launch a test flight of its Antares rocket in July. Then in September, an Antares rocket is scheduled to launch a Cygnus cargo carrier on a demonstration mission before its first cargo resupply mission to the Space Station in early 2013.

With the US pace Shuttle fleet firmly retired, the Dragon is the only means to return scientific experiments and equipment from the Space Station. All other robotic cargo carriers servicing the orbiting outpost double as rubbish trucks and burn up in the atmosphere.

Artist's impression of Dragon approaching the Space Station.                
"Since we no longer fly shuttles, we can’t take anything sizeable back down from the Space Station and this is absolutely critical to Space Station," Bill Gerstenmaier, associate administrator for Human Exploration and Operations, said.

The commercial space race in the US may be hotting up but it can’t disguise the fact that the country and NASA will remain without the ability to put people into orbit for at least another five years or perhaps longer.

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