Random Linkage 24/10/09

Smart rat 'Hobbie-J' produced by over-expressing a gene that helps brain cells communicate
‘Over-expressing a gene that lets brain cells communicate just a fraction of a second longer makes a smarter rat, report researchers from the Medical College of Georgia and East China Normal University.’

Algae and Light Help Injured Mice Walk Again
‘In the summer of 2007, a team of Stanford graduate students dropped a mouse into a plastic basin. The mouse sniffed the floor curiously. It didn’t seem to care that a fiber-optic cable was threaded through its skull. Nor did it seem to mind that the right half of its motor cortex had been reprogrammed.’

Killer Algae: Key Player In Mass Extinctions
‘Supervolcanoes and cosmic impacts get all the terrible glory for causing mass extinctions, but a new theory suggests lowly algae may be the killer behind the world's great species annihilations.’

Giant Impact Near India — Not Mexico — May Have Killed Dinosaurs
'A huge, mysterious basin off the coast of India could be the largest, multi-ringed impact crater ever found on Earth. And if a new study is right, this impact may supercede the one that created the Chicxulub crater off Mexico's Yucatán Peninsula as what may have been responsible for killing the dinosaurs 65 million years ago. Sankar Chatterjee of Texas Tech University and a team of researchers have been studying a 500-kilometer-wide (300-mile-wide) depression on the Indian Ocean seafloor which was likely created by a bolide perhaps 40 kilometers (25 miles) in diameter. Such an event would have triggered worldwide climate changes, including intensified volcanism, that led to mass extinction.'

New Concept May Enhance Earth-Mars Communication
‘Direct communication between Earth and Mars can be strongly disturbed and even blocked by the Sun for weeks at a time, cutting off any future human mission to the Red Planet. An ESA engineer working with engineers in the UK may have found a solution using a new type of orbit combined with continuous-thrust ion propulsion.’

Moon scientist arrested on spy charges
'A US scientist who had high-level security clearance and was a principal investigator on a current NASA Moon mission has been arrested for attempted espionage.'
(It's not every day that Nature features an espionage story; still, it would be even better if he'd been arrested on the Moon.)

Serving Your Space Porn Needs Since 2006

The Big Picture has posted a stunning selection of images taken by the Cassini orbiter during Saturn's equinox. Do I need to tell you to get over there right away and check them out?

Yesterday's Future Today

Here's an exciting example of cutting edge medical science, combining a clever molecular biology technique with a race-against-time detective story:

In a dramatic illustration of the power of emerging genetic technologies, Yale University researchers have reported making a clinical diagnosis for the first time using comprehensive DNA sequencing of all the protein-coding genes in the genome. The information changed the course of treatment of a baby boy suffering from symptoms of dehydration thousands of miles away in Turkey.

The baby boy presented symptoms that suggested he was suffering from a genetic condition affecting the way his kidneys functioned. Researchers extracted DNA from a small blood sample and applied a technique, whole exome sequencing, that analyses the small percentage of the genome that contains exons. Exons are stretches of DNA in genes that code for the sequences of amino acids that make up proteins. In eukaroyotes (basically, any organism with a cell nucleus), exons are separated by long stretches of DNA, introns, that don't code for amino acids in proteins. Genomes also contain huge amounts of so-called junk DNA between functioning genes, as well various other kinds of non-amino acid coding DNA. As a result, the DNA that codes for proteins makes up just 1% of the human genome, so a technique that exclusively reads exons saves a lot of time and money, and can quickly and accurately pinpoint mutations.

To cut a long story short, the researchers found that the mutation wasn't, as first suspected, the one that causes a rare condition known as Bartter syndrome, but affected a gene that regulates uptake of chloride and water by cells lining the gastrointestinal tract. Since most (but not all) genetic diseases are caused by mutations in the exome, this has all kinds of implications for fast, rapid, and accurate diagnosis of many diseases, and could help unravel the kind of complex syndromes that Dr Gregory House deals with on a weekly basis.

I'm especially interested in this not only because it is a very clever and neat technique, but it's also a powerful illustration that the future is a lot closer than we think. Or in this instance, than I thought. One of the characters in The Quiet War used a similar technique to diagnose a problem with a microalgal culture essential for the quickening of a biome. Macy Minnot applied a belt-and-braces approach I assumed would be commonplace in her present, our future: a comprehensive reading not only of the entire genome of the recalcitrant microalgal species, but also of its proteome (the complete array of structural and functional proteins in a cell). A little crude compared to the finer focus of exome sequencing, maybe, but able to capture a holistic snapshot of everything going on inside a cell, including all kinds of regulatory functions coded in non-exomic DNA. And by a funny little coincidence pinpointing a problem with another kind of transport gene, this one regulating uptake of phosphate.

Ballardian

'These photographs of albatross chicks were made just a few weeks ago on Midway Atoll, a tiny stretch of sand and coral near the middle of the North Pacific. The nesting babies are fed bellies-full of plastic by their parents, who soar out over the vast polluted ocean collecting what looks to them like food to bring back to their young. On this diet of human trash, every year tens of thousands of albatross chicks die on Midway from starvation, toxicity, and choking.'

There She Blows

Remember LCROSS? A rocket stage and a space probe crashing into a crater at the Moon's south pole one after the other? The huge plume that should have been visible from Earth, and should have provided evidence for or against the presence of water ice in the achingly cold permanent shadows inside the crater? I know, I know, it was a bust. No big plume, no instant results. It all happened so long ago, all of ten days, and the world has moved on.


Well, turns out there was a plume after all, created by the impact of the rocket stage. There it is, inside the circle, right on the money. An actual spaceship (kind of) impact! According to one of the scientists on the project, “Within the range of model predictions we made, the ejecta brightness appears to be at the low end of our predictions." So it wasn't visible from Earth, or the Hubble telescope, but there it is all the same, captured by the LCROSS probe as it rode in towards its own impact. LCROSS captured spectrographic data too, and so did the Lunar Reconnaissance Orbiter, which went on to map the thermal footprint of the impacts. Scientists are analysing it. Some time soon, maybe early in November, they may have some preliminary results.

And right there is one of the problems with trying to get people interested in science, in the age of One-Click shopping. News cycles grow shorter and shorter. We want our instant fix even more instantly. Superinstantly. Hyperinstantly. But actual science is slow and painstaking. It takes time, to look at the evidence. It takes more time to work out what it means. You give people two impacts on the Moon, one right after the other. I mean, really, how much more excitement can you take? But there's no big plume and no instant answer. Pundits begin to predict a moondoggle and complain that the project was overhyped and too hastily staged. And meanwhile, the truth grows stealthily and slowly towards the light. But when it emerges, especially if it's equivocal, will it be reported?

Oh, by the way, 32 new exoplanets found.

Random Linkage 17/10/09

New view reveals how DNA fits into cell
'Cells are tidy packers, cramming DNA into nuclei to create a tangle-free, dense ball with pieces that are still accessible, researchers report October 9 in Science. The findings, based on a new three-dimensional view of the whole human genome, solve a long-standing biological mystery and may lead to a deeper understanding of how genes operate.'
(A beautiful and painstaking piece of research - my favourite biology story of the year, so far).

New Type Of Flying Reptile: Darwin's Pterodactyl Preyed On Flying Dinosaurs
'An international group of researchers from the University of Leicester (UK), and the Geological Institute, Beijing (China) has identified a new type of flying reptile, providing the first clear evidence of an unusual and controversial type of evolution.'

Sniffer bees

Asteroid Is Actually A Protoplanet, Study Of First High-resolution Images Of Pallas Confirms
'Britney E. Schmidt, a UCLA doctoral student in the department of Earth and space sciences, wasn't sure what she'd glean from images of the asteroid Pallas taken by the Hubble Space Telescope. But she hoped to settle at least one burning question: Was Pallas, the second-largest asteroid, actually in that gray area between an asteroid and a small planet?'

First black hole for light created on Earth
'An electromagnetic "black hole Movie Camera" that sucks in surrounding light has been built for the first time.
'The device, which works at microwave frequencies, may soon be extended to trap visible light, leading to an entirely new way of harvesting solar energy to generate electricity.'

Physicists Calculate Number of Universes in the Multiverse
'If we live in a multiverse, it's reasonable to ask how many other distinguishable universes we may share it with. Now physicists have an answer.'
(And it isn't 42.)

The Chemistry of Information Addictions
(Go on. Click. You know you want to.)

Earth And Moon As Seen From Mars

Snapped by HiRise. Howdy, neighbour!

Xposted to Pyr-o-mania

The Prehistory Of The Quiet War

The Quiet War has just been the subject of io9's first book club feature. Someone asked me to provide a list of the short stories that preceded the novels, and I thought it might be useful to post it here, too. Originally, I just wanted to make use of various exotic settings in the outer reaches of the Solar System; later the stories became a trial run for the novels, which modify a background history that was rather unevenly developed in the stories (moral: always have a plan, rather than making it up as you go along). Also, gosh, I've been thinking about this stuff, on and off, for more than a dozen years.

'Second Skin' first appeared in Asimov's Science Fiction, Dell Magazines, 1997
'Sea Change, With Monsters' first appeared in Asimov's Science Fiction, Dell Magazines,1998
'The Gardens of Saturn' first appeared in Interzone, 1998
'Reef' first appeared in Sky Life, edited by Gregory Benford and George Zebrowski, Harcourt Brace, 2000
'Making History', PS Publishing, 2000
'The Passenger' first appeared in Asimov's Science Fiction, Dell Magazines, 2002
'The Assassination of Faustino Malarte' first appeared in Asimov's Science Fiction, Dell Magazines, 2002
‘Dead Men Walking’first appeared in Asimov’s Science Fiction, Dell Magazines, 2006
‘Incomers’ first appeared in The Starry Rift, edited by Jonathan Strahan, Viking, 2008

Nostalgia For The First Space Age

Life has a very cool gallery of photographs of the packaging of space-age toys from the 1960s, from a flying saucer with 'real space noise' to a 'smoking space man' (how times have changed). There's also a friction-powered atomic rocket, possibly a solution to the problem of how to get to other planets quickly. You'd need a really big strip of carpet to charge it up, though.

Picture above is a scan of the box of one of my collection of reproduction toys - can't afford the real thing, alas...

Interplanetary Travel

National Geographic has posted a great zoomable map detailing the first fifty years of the conquest, sorry, exploration, of the Solar System by robots. If you want to expand your mind, check out the graphic at the bottom, which shows where long-range probes are right now. New Horizons, on its way to Pluto, has recently crossed the orbit of Saturn. Much further out, past the orbit of Pluto and the Kuiper Belt, are Pioneers 10 and 11 and the two Voyagers. Voyager 1 is 10 billion miles from the Sun, 10 times more distant than New Horizons's present position: it's the most distant man-made object, and it's still, just, inside the Solar System. Space is big.

(Link via Universe Today.)

Commercial Break

The Royal Observatory at Greenwich and Sci-Fi London are presenting the premiere of a new SF-based planetarium show on October 23rd. Buying a ticket gets you into the observatories galleries, too, and access to all kinds of supporting events, including a panel featuring Jaine Fenn, Tom Hunter, Paul Graham Raven, Alastair Reynolds, and me. We'll be discussing 'whether science fiction authors are wasting their time writing about interplanetary travel, space colonisation and the spread of mankind across the universe given everything science has taught us about the realities, possibilities and costs of doing so.' Gosh, are we?

And next year, in May, I'll be teaching a course on writing SF and Fantasy (you at the back, boy, stop sniggering) at Kingston University. Short, intensive, and hopefully as much fun as this year.

Random Linkage 10/10/09

'Trash Can' Nuclear Reactors Could Power Human Outpost On Moon Or Mars
‘NASA has made a series of critical strides toward the development of new nuclear reactors the size of a trash can that could power a human outpost on the moon or Mars.’
(Or small communities in, say, Iraq or Afghanistan.)

Trips to Mars in 39 Days
‘Using traditional chemical rockets, a trip to Mars – at quickest — lasts 6 months. But a new rocket tested successfully last week could potentially cut down travel time to the Red Planet to just 39 days. The Ad Astra Rocket Company tested a plasma rocket called the VASIMR VX-200 engine, which ran at 201 kilowatts in a vacuum chamber, passing the 200-kilowatt mark for the first time. "It's the most powerful plasma rocket in the world right now," says Franklin Chang-Diaz, former NASA astronaut and CEO of Ad Astra. The company has also signed an agreement with NASA to test a 200-kilowatt VASIMR engine on the International Space Station in 2013.’

Massive MESSENGER Mercury Mosaic
'Just in time for MESSENGER's third flyby comes a mosaic from the second flyby! This absolutely enormous mosaic of Mercury's globe represents 66 individual narrow-angle camera frames on Mercury captured by MESSENGER as it departed from its second encounter. Its departure view on its recent, third flyby would have been basically the same if it had not been in safe mode. The mosaic was assembled by Cassini imaging team member Jason Perry in his free time, and I hereby thank him for the four days of effort that it took him to establish a control network that would make his software behave and assemble this gorgeous view. I'm glad he could do it because it was way beyond my expertise! Now does anybody else want to dive into the Planetary Data System for the color data taken using the wide-angle camera during departure so we can produce a nice color version of this view? There was a 3-by-3 WAC color mosaic at about the same time...'
(If this doesn't inspire you to write some Mercury-based fiction, I don't know what will.)

Blasted into space from a giant air gun
'When Jules Verne wrote about a gigantic gun that could be used to launch people into space in the 19th century, no one expected it to become a reality. Now physicist John Hunter has outlined the design of such a gun that he says could slash the cost of putting cargo into orbit.'

Pumpkin cannon could be ultimate big-boy toy*
'John Gill tucks a gray pumpkin under his arm and climbs to the top of a rusty ladder. He opens a hatch on the side of a steel pipe, drops the pumpkin inside and sprays it with magenta paint.
'"So we can find it later," he says.'
(Via Neatorama.)
*(No kidding.)

Where It's At

Tom Waits provides the answer to that old chestnut, 'Where do you get your ideas?'

"You know how it is," he says. "If you're a writer you know that the stories don't come to you, you have to go looking for them. The old men in the lobby: that's where the stories were. And then when the record label would send me on tour, I always resisted checking into the usual places. I'd step off the bus and look for the hotels named after presidents." Hotels named after presidents, he argues, guarantee a certain grubby authenticity. "The Taft!" Waits says with relish. "You could usually rely on finding a Taft in every town. Take me to the Taft! You walk in and there they are: the old men in the lobby."

Wham!

Just watched the coverage of the impact of the LCROSS spacecraft on the Moon, following the impact, a few minutes earlier, of the Centaur rocket stage it had been shepherding. The impacts, in a permanently shadowed part of a crater at the Moon's south pole, have thrown up plumes of material; measurements of the plumes are being analysed right now to see if they contain any water. If they do, it's good news for those who want to press ahead with a return of manned landings to the Moon; if they don't, it could mean that there aren't any ice deposits in those shadow regions after all, or that LCROSS and the rocket stage hit dry spots. In any case, it's a tremendous techical achievement.

What struck me was the enormous gap between the behaviour of the NASA scientists and their fictional counterparts in films and TV shows. No fevered arguments between brilliant mavericks and unimaginative bureaucrats about last-minute make-or-break adjustments to the spacecraft's trajectory; no nervous breakdowns based on flashbacks to childhood trauma; no instant and triumphant cry that millions of tons of water had been found. In short, no drama, just quiet and calm competence, a short round of applause when LCROSS hit its target, and a brief subdued talking heads panel.

Well, that's reality. But what's also real is a couple of spacecraft slamming into the Moon within a few minutes of each other with pinpoint precision and at twice the speed of a bullet, throwing plumes of debris ten kilometres above the surface. The future of manned missions to the Moon hangs into the balance. And the official TV presentation has all the excitement of the opening of a new telephone sales centre on the Watford Ring Road. I'm being a little unfair - there were plenty of press releases, and NASA Ames put on a show for impact night - but given the general public's indifference, and NASA's reliance on tax dollars, it's a shame that its own coverage was so low key. Surely there must be some way of sexing up the work of its scientists without distorting it?

One Ring To Bind Them

All over the news right now is what is probably going to be #1 in a long list of Things I Wish Had Been Discovered Before I Started Writing The Quiet War And Gardens Of The Sun.

Discovered by the Spitzer space telescope and visible only in infrared light is a vast ring tilted at twenty-six degrees to the Saturn's equatorial plane - the plane in which the more familiar ring system and the inner moons orbit. It's very very big, this ring, circling Saturn at a distance of 13 million kilometres: if you look at Saturn from Earth, imagine that it's sitting inside a ring that is twice the apparent diameter of the full Moon. Factor in the relative distances of the Moon and Saturn, (384,000 kilometres v. the minimal distance, at opposition, of roughly 1300,000,000 kilometers), and you'll realise that this is a very big structure indeed: the biggest known ring in the Solar System

It's very big, but it's also very tenuous. More tenuous than even the vacuum inside electronic vacuum tubes: there are on average twenty grains of icy dust in each cubic kilometre of this giant ring. For good reason, its discoverers are calling it the Ghost Ring. It's no coincidence that it shares the same orbital inclination and distance as Saturn's moon Phoebe; it's almost certainly composed of material knocked off that small and eccentric moon by meteoritic impacts. Phoebe is an odd little moon; not only is its orbit steeply inclined, it's also retrograde - it travels in the opposite direction to the inner moons. Images taken by the Cassini orbiter as it passed Phoebe on its approach to Saturn show an irregular and heavily cratered body, with slivers of bright ice showing through a dark outer crust of carbonaceous material. It's similar in composition to Kuiper Belt Objects, in fact, and was probably captured by Saturn when something perturbed its orbit and it wandered in towards the Sun.


There's speculation that the material in the Ghost Ring has contributed to the distinctive colouration of the outermost of the large moons, Iapetus. Famously, Iapetus is bright on one side and dark on the other, a property spotted by the man who discovered it, Giovanni Domenico Cassini, in the seventeenth century. Now, it seems that the dark sooty material from the ring has been swept up by Iapetus's leading hemisphere over a couple of billion years.


But is the Ghost Ring really the largest ring in the Solar System? Saturn has many other small irregular moons in wide eccentric orbits. Most belong to collisional families and are probably fragments from a larger body that was shattered by some impact after it was captured by Saturn's gravity: the Inuit Group; the Norse Group; and the Gallic Group. Phoebe belongs to the Norse Group. The moons in the Gallic Group orbit even further out. Could they, too, have generated a ghost ring?

A Film I'd Dearly Love To See

Thom Anderson's Los Angeles Plays Itself, an argument assembled from film clips that use actual locations in LA. Plays on the festival/arthouse circuit, will probably never surface on DVD because of copyright issues, alas.

Random Linkage 03/10/09

Dawn Journal: Good performance means a longer stay at Vesta!
'Dawn is celebrating the second anniversary of leaving its home planet by engaging in the same function it has performed most of its time in space: with the utmost patience, it is using its ion propulsion system to gradually modify its orbit around the Sun.'

MESSENGER Gains Critical Gravity Assist for Mercury Orbital Observations
‘MESSENGER successfully flew by Mercury yesterday, gaining a critical gravity assist that will enable it to enter orbit about Mercury in 2011 and capturing images of five percent of the planet never before seen. With more than 90 percent of the planet’s surface already imaged, MESSENGER’s science team had drafted an ambitious observation campaign designed to tease out additional details from features uncovered during the first two flybys. But an unexpected signal loss prior to closest approach hampered those plans.’
(Nice images, despite the glitch.)

Cosmic Rays Hit 50-Year High. Galactic cosmic rays have just hit a Space Age high, new data from a NASA spacecraft indicates.
'"In 2009, cosmic ray intensities have increased 19 percent beyond anything we've seen in the past 50 years," said Richard Mewaldt of Caltech. "The increase is significant, and it could mean we need to re-think how much radiation shielding astronauts take with them on deep-space missions."'

Increase in sea levels due to global warming could lead to 'ghost states'
'Global warming could create "ghost states" with governments in exile ruling over scattered citizens and land that has been abandoned to rising seas, an expert said yesterday.'

Clues To Reversing Aging Of Human Muscle Discovered
'A study led by researchers at the University of California, Berkeley, has identified critical biochemical pathways linked to the aging of human muscle. By manipulating these pathways, the researchers were able to turn back the clock on old human muscle, restoring its ability to repair and rebuild itself.'

Swedish parents win right to name sprog 'Q'
'The parents of a Jämtland boy have emerged triumphant from the Swedish Supreme Administrative Court, aka Regeringsrätten, and may henceforth legally refer to the sprog as "Q".'

More Martian Ramblings

Soon after posting a short note on Paul Davies's proposal about getting to Mars cheaply by staging one-way missions, I ran into my friend Oliver Morton, who pointed me towards a post on his Mainly Martian blog that with takes apart Davies's claims in meticulous detail. Oliver is a Mars-head from way back - his book, Mapping Mars, is essential reading for anyone interested in the history of observation and exploration of the red planet - and his demolition job is pretty comprehensive. Cutting out a return vehicle wouldn't lower the cost of the mission by as much as Davies suggests; if the one-way trip isn't a suicide mission, the Mars explorers will have to set up a permanent base camp under extreme and arduous conditions, and will need continuous resupply from Earth for the forseeable future; the 'lifeboat' argument for space colonisation elides the uncomfortable fact that most people will be left behind. And so on.

All in all, it's a bracing dose of realism. If there is a cheap way of going to Mars, a one-way trip isn't the way to do it. (Still, as an irresponsible SF writer, I feel there's plenty of fictional traction in the scenario. I've already dabbled in it, as the background story of one of the secondary characters in The Secret of Life; now I'm wondering what would happen if, say, there was a privately funded one-way mission to Mars that had to rely on viewers' ratings to keep its astronauts resupplied: a Robinson-Crusoe-On-Mars reality show. Or suppose a one-way mission made a go of it with the help of a substantial resupply programme, and fifty years later their descendants were faced with the bill...).

I do take issue, though, with Oliver's last point:

Human Mars exploration is indeed a fine goal, and it is quite possible that fairly early on there will be some who elect to stay. But the only real argument for doing it sooner or rather than later is the selfish one of wanting to see/participate in it personally. I can appreciate that, but I don't think it's a compelling policy point. There are a lot of other big exciting projects to inspire us -- a new energy infrastructure for the world, the millennium development goals, in pure science the development of telescopes for characterising the atmospheres and possible biospheres of exoplanets.

Yes, going to Mars as soon as possible for personal reasons isn't a compelling reason (even if you are a zillionaire who can fund the entire caper). And yes, there are plenty of other ways to spend the money. But I'm not convinced that funding of expensive space missions diverts essential resources from more pressing problems here on Earth. It's a straw man argument that's been around since the Apollo missions, and there's no evidence that cash cut from NASA funds goes to humanitarian aid or other scientific projects instead; either it goes elsewhere in the overloaded federal budget, or it simply isn't spent. And it isn't as if all that money is blasted into orbit, never to return. Most of it stays right here. It's spent on research and development, on construction of infrastructure, and on the salaries of the thousands of men and women who are involved in supporting manned missions in every kind of way. And if manned missions are cut out of the NASA programme, then all that expertise is lost, and so is the momentum.

The International Space Station is due to be decomissioned in a few years; if it is, that will put an end to the need for manned missions to low Earth orbit. And although there's talk about going to the Moon, we've already been there, and the main rationale for returning is that it would be a staging post or training ground for the Big Leap Outwards. Given that funds are limited, why not start planning and working towards that Big Leap now, with missions to Near Earth asteroids, a round trip around Venus, and maybe a mission to Phobos, rather than a diversion to the Moon? The romantic in me would like to think that kind of thing might be possible in my life time, at least . . .

Xposted to Pyr-o-mania

Gardens Of The Sun, Part Three, Chapter Five

Sri Hong-Owen was walking a transect of the rim forest early one morning, collecting hand crabs for a population survey, when Euclides Peixoto called her out of the blue. He told her that there’d been a little trouble she should know about, back on Earth, and read out a brief official announcement about a successful action against a nest of criminals in Antarctica who had been in flagrant breach of the new regulations controlling scientific research. Survivors had been arrested and transported to Tierra del Fuego; their laboratories had been destroyed.

‘I’m sorry to be the bearer of bad news but there it is,’ Euclides said, not sounding sorry at all.

‘Alder. Is he one of the survivors?’

READ MORE . . .

Another Commercial Break

Gardens of the Sun is amongst the deluge of books published on this Super Thursday. So why not head out to your favourite bookshop, go straight past the piles of stuff by TV personalities towards the quiet calm of the SF section, and do the right thing? Readers in the US might like to know, if they don't already, that The Quiet War is available for download to their Kindles.

I'll be posting the last extract from Gardens of the Sun tomorrow: a long chapter that will bring us to the end of the third section, and the midway of the book.