Quotulatiousness

April 17, 2012

SpaceX Dragon cleared for April 30 flight to ISS

Filed under: Science, Space, Technology — Tags: , , , , — Nicholas @ 09:28

Brid-Aine Parnell updates the status of the SpaceX Dragon re-supply flight to the International Space Station at the end of the month:

The cargoship test flight, assuming it goes off without a hitch, will mark the first time a commercially made spacecraft has ever blasted off to visit the ISS.

NASA and SpaceX officials met yesterday in Houston for the Flight Readiness Review, a typical part of pre-launch prep at the agency, and confirmed that the Dragon and its SpaceX Falcon 9 rocket were on track for the end of this month.

“Everything looks good heading to the April 30 launch date,” said Bill Gerstenmaier, NASA’s associate administrator for Human Exploration and Operations, in a canned statement.

The Dragon is due to blast off from Cape Canaveral at 12.22 EDT (16.22 GMT) carrying 1,200 pounds of cargo.

Because this is a test flight, the cargo isn’t critical stuff for the astronauts, but NASA and SpaceX are still hoping to see the ship fly close enough to the station for its robotic arm to grab it and berth it, which is the tricky bit.

April 13, 2012

Filling in for Envisat: “the CSA’s Radarsats 1 and 2 will try to fill some of the gaps”

Filed under: Cancon, Europe, Science, Space — Tags: , — Nicholas @ 08:43

The European Space Agency is still at a loss on why their flagship Envisat satellite suddenly went silent, but while they’re trying to diagnose and hopefully fix the problem, the Canadian Space Agency is helping to cover some of the gaps:

Controllers say the eight-tonne spacecraft appears to be in a stable condition, but they are not receiving any data at all from it.

Contact was lost with Envisat at the weekend shortly after it downloaded pictures of Spain’s Canary Islands.

A recovery team, which includes experts from industry, is now trying to re-establish contact with the craft.

Mission managers said on Friday that they were working through a number of possible fault scenarios but conceded they had little to go on.

[. . .]

Of more immediate concern are the operational and scientific projects that rely on Envisat data.

The satellite’s information is used daily to monitor for oil spills at sea, to check on iceberg hazards, and to provide information for meteorological forecasts, among a wide range of services.

All this had now been disrupted, said Prof Liebig.

“What we have done is [activate] the contingency agreement we have with the Canadian Space Agency (CSA) which we have had for many, many years. Canada has responded very positively. So, for a certain time, the CSA’s Radarsats 1 and 2 will try to fill some of the gaps.”

March 19, 2012

The PR problem of NASA

Filed under: Bureaucracy, Media, Politics, Space, USA — Tags: , , , , , — Nicholas @ 09:49

L. Neil Smith explains why and how NASA has managed to become so uninspiring (hint: it was deliberate).

The truth is, there are three kinds of people in the world, those to whom traveling to, landing on, settling, and terraforming the planet Mars requires no explanation, those for whom no explanation of any kind will ever suffice, and those who remain to be convinced.

Our job in that respect really amounts to putting the romance back into space exploration that the National Aeronautics and Space Administration carefully throttled out of it over the past half century. I think their secret motto was, “If you’re having any fun, you’re not doing it right.”

All that time, NASA and its supporters seemed to be asking desperately, why is the American public losing interest in what we’re doing? But the answer was in the mirror before them. In a desperate bid for false respectability, in a misplaced desire not to evoke visions of Flash Gordon or Buck Rogers or Captain Video, they ended up not evoking any visions at all, and thereby destroyed any reason for the average individual, the average man, woman, or child, to support their program.

I have also come to think — very reluctantly, believe me — that there has been a secret agenda, probably in echelons much higher than NASA itself, to prevent that average individual from ever getting into space, which may be why they opposed the whole “space tourism” idea so hysterically.

March 17, 2012

Schiaparelli’s ambiguous word choice and the lasting obsession with Mars

Filed under: Books, History, Italy, Media, Science, Space — Tags: , , — Nicholas @ 11:09

Scott Van Wynsberghe reviews the hold that fictitious Mars has held on the imagination since “canals” were observed:

Mars, the most obsessed-about extraterrestrial body in the universe, has come our way again. On March 9, Hollywood unveiled John Carter, the first film adaptation of a famous series of Martian adventures written by Edgar Rice Burroughs, better known as the creator of the jungle hero Tarzan. Burroughs’s Martian yarns act as a portal to 135 years of cultural history that really is out of this world.

The bizarre story of humanity’s modern entanglement with the Red Planet began in 1877, when Italian astronomer Giovanni Schiaparelli reported the existence of “canali” on the Martian surface. In Italian, that word can mean both “channels,” which are natural formations, and “canals,” which are not. According to science writer John Noble Wilford, that ambiguity was never cleared up.

[. . .]

Caught between science fiction and the supernatural, actual scientists were in trouble. French astronomer Camille Flammarion, for example, alternately wrote about Mars and reincarnation (1889) and Mars and science (1892). In 1900, the inventor Nikola Tesla announced that he had monitored transmissions from either Mars or Venus, but he was jeered (biographer Margaret Cheney thinks he was just detecting natural electromagnetic patterns in space). In 1921, radio pioneer Guglielmo Marconi thought he had received a signal from Mars, but that, too, went nowhere. The biggest offender, however, was American astronomer Percival Lowell.

In 1895, Lowell released the first of a series of books proclaiming that Mars was inhabited. The canali, he said, really were canals, supporting a civilization struggling to survive on a dying globe. Although rightly scorned by other astronomers, Lowell was a superb writer and a frequent lecturer — Robert Goddard, the father of American rocketry, heard him speak — so his message spread. (And, in a way, it is still spreading: Think of that recent, much-debunked conspiracy theory about a giant, sculpted face on the Martian surface.)

February 11, 2012

Yet another theory on the solar effect on the Earth’s climate

Filed under: Environment, Science, Space — Tags: , , — Nicholas @ 12:14

You’d automatically assume that the sun is a major factor in the climate, but this theory is non-intuitive:

That man is the Danish physicist Henrik Svensmark, who seems to have discovered the most important factor that actually regulates Earth’s climate, and who is quietly in the process of proving it.

[. . .]

Let me briefly sum up Svensmark’s theory. The temperature of the Earth, he argues, is regulated by the intensity of solar radiation, but not in the obvious way. It is not that the increase is solar radiation heats the Earth directly. (It does, of course, but not to a sufficient degree to explain climate variations.) Rather, an increase in solar radiation extends the Sun’s magnetic field, which shields Earth from cosmic rays (highly energetic, fast-moving charged particles that come from deep space). How does this affect the climate? Here is the crux of Svensmark’s argument. When cosmic rays hit the atmosphere, he argues, their impact on air molecules creates nucleation sites for the condensation of water vapor, leading to an increase in cloud-formation. Since clouds tend to bounce solar radiation back into space, increased cloud cover cools the Earth, while decreased cloud cover makes the Earth warmer.

So if Svensmark is right, lower solar radiation means more cosmic rays, more clouds, and a cooler Earth, while higher solar radiation means fewer cosmic rays, fewer clouds, and a warmer Earth.

Those who have followed the global warming controversy over the years may recall that cloud-formation is one of the major gaps in the computerized climate “models” used by the consensus scientists to predict global warming. They have never had a theory to explain how and why clouds form or to account accurately for their effect on the climate. Svensmark has smashed through this glaring gap in their theory.

January 30, 2012

Researching how to stop asteroids from “just dropping in”

Filed under: Europe, Science, Space, Technology — Tags: , , , — Nicholas @ 10:08

Brid-Aine Parnell in The Register on some of the technologies being explored to reduce or eliminate the chance of unpleasantly close encounters with celestial objects:

A new international consortium has been set up to figure out what Earthlings could do if an asteroid came hurtling towards the planet on a path of imminent destruction.

The project will look at three methods of averting disaster: the Hollywood-sanctioned solutions of sending up a crack team of deep drillers with a nuclear bomb to sort it out, or frantically hurling of all our nukes at it; dragging it to safety with a Star Trek-inspired tractor beam; or hitting it with something we have more control over, like a spaceship.

Sporting the cool moniker NEOShield, the project will explore the possibilities for kinetic impactors, gravity tractors and blast deflection as ways to save our planet from oblivion.

[. . .]

“In the light of results arising from our research into the feasibility of the various mitigation approaches and the mission design work, we aim to formulate for the first time a global response campaign roadmap that may be implemented when an actual significant impact threat arises,” NEOShield boldly stated.

The anti-Moonbase chorus

Filed under: Space, USA — Tags: , , , — Nicholas @ 09:46

Natalie Rothschild on the (non-political) opposition to the very notion of a manned space program:

Suspicion towards space exploration is not new, of course. Since the 1970s, it has variously been decried as a danger to peace and security, as a chauvinist enterprise, as a wasteful pursuit and as a threat to the environment. Yet pessimism and indifference to space discoveries are at an all-time high today. This became clear in the reaction — or lack of reaction, rather — to NASA’s announcement in December 2009 that water had been discovered on the moon. As Sean Collins pointed out on spiked at the time, this was ‘a giant leap towards fulfilling one of our collective fantasies, something only dreamed about in science fiction: humans living somewhere other than Earth’. It also made the moon a more likely base for manned missions to other parts of the solar system and NASA suggested the lunar water could hold a key to the history and evolution of the solar system. Yet, as Collins pointed out then, neither online pundits nor the mainstream media nor the authorities made a big deal out of the ground breaking discovery.

Seen in this context it was no surprise that Gingrich’s boasts were ridiculed. His plans for a space colony might have sounded like a good idea when he touted it to Florida’s struggling Space Coast. After all, when the Obama administration cancelled George W Bush’s plans to return American astronauts to the moon by 2020, it prompted protests from the communities that depend on NASA for their livelihood as well as from Apollo veterans. But it was no surprise that he was met with put-downs from most other quarters and that his ideas were entirely dismissed.

By and large, human achievements tend to be downplayed today. Exploring the unknown is seen as, at best, impractical and, at worst, reckless. When it comes to manned space exploration, the prevailing attitude is ‘been there, done that’. That’s why there’s been an unwillingness to separate Gingrich’s more wacky ideas — launching a new space race and establishing a permanent American outpost on the moon within eight years — from his sensible reminder that if we are to have any chance of making new discoveries and advances in the near or distant future, then we need to be willing at least to imagine that it’s possible and desirable to overcome the limits we face today.

January 27, 2012

NASA Moonbase by 2020: not likely

Filed under: Bureaucracy, Science, Space, Technology, USA — Tags: , , , — Nicholas @ 09:30

I’m just as eager to see more manned exploration of the solar system as the next person, but Newt Gingrich’s announcement the other day is just so much moonshine:

The basic idea is not actually as far-fetched as it sounds. NASA in 2006 announced plans to set up a colony on the south pole of the moon, in around 2020, as a base for further manned exploration of the solar system.

The problem for Gingrich, a space enthusiast with ideas dating back decades for zero-gravity honeymoons and lunar greenhouses, is that the 2008 financial crisis came along and turned feasible projects into pipe dreams.

“A lunar base by 2020 is a total fantasy,” John Logsdon, professor emeritus at George Washington University’s Space Policy Institute, told AFP.

“We got to the moon in the 1960s by spending over 4% of the federal budget on Apollo. NASA’s now at one-tenth of that level.”

The initial problem is both financial and organizational: for all the money being poured into NASA, each dollar is producing much less in the way of science and technology because of the calcified bureaucracy. NASA achieved great things during the Apollo program, but the bureausclerosis was setting in even before the first shuttle flew. To get the kind of results that the “old” NASA achieved, you’d have to blow it up and start from scratch — or better yet, privatize the whole shebang and get the bureaucracy out of the way of the entrepreneurs.

As Robert Zubrin pointed out in the February issue of Reason magazine, NASA has become far too concerned about safety — less out of genuine concern about the astronauts and other employees, but more because of the negative effects of bad PR on the next year’s budget. Under the current NASA management, none of the pre-shuttle launches would have been allowed because they were too dangerous (and we know how dangerous the shuttle was, in hindsight).

January 9, 2012

DARPA appoints former astronaut to lead 100-year starship project

Filed under: Space, Technology, USA — Tags: , , , — Nicholas @ 09:56

Brid-Aine Parnell works the Star Trek angle on the appointment of former NASA astronaut Dr Mae Jemison as the head of the 100-year Starship project:

The agency had not responded to a request for comment at the time of publication, and has not yet announced the appointment publicly.

Dr Jemison, who has a degree in chemical engineering and a doctorate in medicine, was the science mission specialist on the STS-47 Spacelab-J in 1992 and logged over 190 hours in space.

As well as being a bona fide boffin, Jemison also spent time in the IT trenches, working in computer programming, among other things, before joining NASA.

She’s also no stranger to the ideas behind a starship, since, as a long-time Star Trek fan, she had a bit part in one episode of Star Trek: The Next Generation.

The episode, entitled Second Chances, must surely go down as evidence of her remarkable patience and forbearance, since it featured the two most irritating TNG characters, Commander Riker and Deanna Troi, rather prominently.

December 25, 2011

The top 100 images from ESA/Hubble

Filed under: Science, Space — Tags: , — Nicholas @ 00:06


Click for full-size image

Some breathtaking images from everyone’s favourite vantage point in space.

H/T to Lois McMaster Bujold for the link.

December 12, 2011

SpaceX Dragon to dock with ISS in February

Filed under: Space, Technology — Tags: , , , , , — Nicholas @ 09:31

Lewis Page on the recent announcement from NASA and SpaceX:

NASA has announced that — all being well — the first mission to the International Space Station by a privately built and operated spacecraft will lift off on February 7. The craft will be a Dragon capsule launched atop a Falcon 9 rocket, both made and handled by techbiz visionary Elon Musk’s new company SpaceX.

“We look forward to a successful mission, which will open up a new era in commercial cargo delivery for this international orbiting laboratory,” said NASA honcho William Gerstenmaier in tinned quotes announcing the planned date. However he didn’t stick his neck out, adding cautiously:

“There is still a significant amount of critical work to be completed before launch, but the teams have a sound plan to complete it and are prepared for unexpected challenges. As with all launches, we will adjust the launch date as needed to gain sufficient understanding of test and analysis results to ensure safety and mission success.”

November 24, 2011

The shot that started the First Interplanetary War?

Filed under: Space — Tags: — Nicholas @ 08:25

Yes, it may not happen for a few more decades, but we were the instigators of what might be the most long-distance war in human history:

The new habitability study has involved the collaborating scientists devising two different indexes for rating worlds, in proper scientifiction style*. We now have the Earth Similarity Index (ESI), showing how much like Earth a body is, on which Earth is 1, Mars is 0.7 and our Moon is 0.56.

The scientists have also worked out a Planet Habitability Index (PHI), based on such things as planetary magnetic fields, atmosphere, likely local temperatures etc. Titan, icy natural-gas slush moon of Saturn, scores high on this at 0.64.

But, very worryingly, the planets of the dim, red M-class star Gliese 581 — lying just 20 light-years away in the constellation Libra — score high up the listings in both systems. Under ESI, the exoplanets Gliese 581g, d and c are the next three most habitable known worlds after Earth: and they are also well up under PHI.

Normally this would not be cause for alarm, but — as regular readers of Reg exoplanet coverage will know — should there be intelligent aliens at Gliese 581 they will soon have an intense and well-justified grievance against us.

It was a deliberate and evil provocation we gave, and our fate may already be sealed.

October 29, 2011

Canadian Air and Space Museum to be evicted in favour of ice rinks

Filed under: Cancon, History, Space, Technology, WW2 — Tags: , , — Nicholas @ 12:20

A sad tale at the CBC website about the impending eviction of the museum and other tenants of the historic (but not historically designated) DeHavilland plant in Downsview:

A building that played a major role in the production of aircraft for the Allies in their fight against Hitler during the Second World War is facing the wrecking ball.

It’s located in Toronto’s Downsview Park and is described in federal heritage documents simply as “CFB Plant .1, Building .1.”

Just one month after the federal government celebrated Canada’s aviation history by reintroducing the name, “Royal Canadian Air Force,” it was sending an eviction notice to a building where RCAF planes were assembled.

Built in 1929, the plant housed the operations of the de Havilland Aircraft company which provided 17 per cent of Canada’s planes during the war years.

[. . .]

David Soknacki, the chairman of Parc Downsview Park, says the building at 65 Carl Hall Road is not currently classified as a heritage building.

Up until Oct. 26., the Canada’s Historic Places website listed the facility as “a recognized Federal Heritage Building because of its historical associations and its architectural and environmental value.”

Then the listing disappeared.

H/T to Michael O’Connor Clarke for the link.

October 23, 2011

DARPA’s new project: space vampires

Filed under: Military, Space — Tags: , , , — Nicholas @ 12:04

Yep. DARPA is hoping to release “swarming robot space vampires”* in geosynchronous orbit:

More than $300 billion worth of satellites are estimated to be in the geosynchronous orbit (GEO—22,000 miles above the earth). Many of these satellites have been retired due to normal end of useful life, obsolescence or failure; yet many still have valuable components, such as antennas, that could last much longer than the life of the satellite. When satellites in GEO “retire,” they are put into a GEO disposal or “graveyard” orbit. That graveyard potentially holds tens to more than a hundred retired satellites that have components that could be repurposed — with the willing knowledge and sanction of the satellite’s owner. Today, DoD deploys new, replacement satellites at high cost — one of the primary drivers of the high cost is the launch costs, which is dependent on the weight and volume of antennas. The repurposing of existing, retired antennas from the graveyard represents a potential for significant cost savings.

DARPA’s Phoenix program seeks to develop technologies to cooperatively harvest and re-use valuable components from retired, nonworking satellites in GEO and demonstrate the ability to create new space systems at greatly reduced cost. “If this program is successful, space debris becomes space resource,” said DARPA Director, Regina E. Dugan.

[. . .]

“Satellites in GEO are not designed to be disassembled or repaired, so it’s not a matter of simply removing some nuts and bolts,” said David Barnhart, DARPA program manager. “This requires new remote imaging and robotics technology and special tools to grip, cut, and modify complex systems, since existing joints are usually molded or welded. Another challenge is developing new remote operating procedures to hold two parts together so a third robotic ‘hand’ can join them with a third part, such as a fastener, all in zero gravity. For a person operating such robotics, the complexity is similar to trying to assemble via remote control multiple Legos at the same time while looking through a telescope.”

* “Swarming robot space vampires”, courtesy of jwz.org.

July 25, 2011

Unique view of the shuttle cockpit

Filed under: Space, Technology, USA — Tags: , , — Nicholas @ 10:05


Click to embiggen

Link provided by Chris Greaves.

Update: There’s a big comment on this shuttle post from Chris Taylor, discussing what the shuttle was originally intended to be, and why it ended up being significantly larger and more expensive than the first proposal.

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