Kaguya Discovers a Lava Tube on the Moon

Image credit: JAXA/SELENE

[/caption]

Future lunar astronauts may want to brush up on their spelunking skills: the first lava tube has been discovered on the moon.

In a recent paper published in Geophysical Research Letters, Junichi Haruyama and colleagues report that they have discovered a mysterious hole in the lunar surface in high resolution images from the Kaguya spacecraft. The hole is 65 meters in diameter and is located in the volcanic Marius Hills region on the near side of the moon, right in the middle of a long sinuous rille. Sinuous rilles are thought to be formed by flowing lava, either on the surface or in enclosed lava tubes.

Of course, there are a lot of ways to form a hole in the surface of the moon. The most obvious is with an impact: the moon has literally been battered to pieces over the years by rocks from space. Couldn’t this hole be a fresh impact crater? Nope. Haruyama’s team observed the hole nine separate times, at various illumination angles, and even when the sun was almost directly overhead it looked mostly black, suggesting that it is very deep. They calculate a depth of around 88 meters, so the hole is deeper than it is wide. No impact crater is like that.

Four different views of the lava tube skylight at varying sun angles. Arrows indicate the direction of incident sunlight (I) and the viewing direction (V). Image credit: JAXA/SELENE
Four different views of the lava tube skylight at varying sun angles. Arrows indicate the direction of incident sunlight (I) and the viewing direction (V). Image credit: JAXA/SELENE

Another possibility is that the hole is due to some sort of volcanic eruption, but there is no sign of volcanic deposits like lava flows or ash emanating from the hole. The hole is isolated, so it isn’t likely to be due to a fracture in the lunar crust either – you would expect such a fracture to form a chain of holes.

Haruyama’s team concluded that the most likely explanation is that the hole that they discovered is a “skylight” – a location where the roof of a lava tube collapsed, either when the lava filling the tube flowed away, or later in the moon’s history due to an impact, moonquake, or tidal forces from the Earth. If it is a lava tube, their calculations based on the multiple images of the hole show that the tube could be 370 meters across.

Lava tubes are important in understanding how lava was transported on the early moon, but they are not just a scientific curiosity: they may also provide valuable refuges for future human explorers. The surface of the moon is not protected from the harsh radiation of space by a magnetic field or a thick atmosphere, so a long term human presence would be most feasible if astronauts could spend most of their time shielded underground. Digging a hole large enough to fit an entire moon colony in it would be a huge engineering challenge, but lava tubes could provide ready-made locations for a well-shielded base, making future astronauts the most technologically advanced cave-dwellers in history.

Dawn Takes up Residence in Asteroid Belt

The Dawn spacecraft – which is on a course to study the asteroid Vesta and dwarf planet Ceres – has taken up permanent residence in the asteroid belt as of November 13th. Dawn is officially the first human-made object to become a part of the asteroid belt, which is sandwiched between the orbits of Mars and Jupiter.Dawn didn’t move in without checking the place out first, though; this is the second visit for the craft, which remained there for 40 days in June of 2008. The lower boundary of the asteroids belt is defined as the furthest Mars gets away from the Sun during its orbit – 249,230,000 kilometers, or 154,864,000 miles.

Dawn, which was launched in September 2007, is on an eight-year, 4.9-billion kilometer (3-billion mile) journey to study the asteroid Vesta and the dwarf planet Ceres. By studying these members of the asteroid belt, NASA scientists hope to learn more about the formation of our Solar System. Because Vesta and Ceres are some of the largest members of the ring of asteroids between Mars and Jupiter, they are the most intact from when they were formed, and should act as a ‘time capsule’ to preserve information about what the early Solar System was like.

Dawn got a gravity assist from Mars in February of 2009, which propelled it past the planet and into the asteroid belt.

The spacecraft is expected to visit Vesta in August of 2011. Vesta is believed to be the source of most of the asteroid-origin meteorites that fall to ground here on Earth, and further study of the asteroid should confirm this.

In May of 2012, Dawn will make its way to Ceres, which lies further out in the asteroid belt. It will arrive there in July of 2015, where it will spend the remainder of its mission studying the icy dwarf planet, which may even have a tenuous atmosphere.

If you want to keep tabs on Dawn in its new home, the mission web site has a tool updated hourly, found here, which allows you to see where Dawn is right now. The tool includes simulated views of the Earth, Mars, Sun and Vesta from the vantage point of the spacecraft.

Source: JPL

Exploring With an Armada of Autonomous Robots

Artist concept of orbiter, airblimps, rovers and robots working together. Credit: JPL

[/caption]

JPL has a fun article on their website detailing what future robotic exploration might entail: an armada of robots could one day fly above the mountain tops of Saturn’s moon Titan, cross its vast dunes and sail in its liquid lakes. This is the vision of Wolfgang Fink, from the California Institute of Technology. He says we are on the brink of a great paradigm shift in planetary exploration, and the next round of robotic explorers will be nothing like what we see today.

“The way we explore tomorrow will be unlike any cup of tea we’ve ever tasted,” said Fink. “We are departing from traditional approaches of a single robotic spacecraft with no redundancy that is Earth-commanded to one that allows for having multiple, expendable low-cost robots that can command themselves or other robots at various locations at the same time.”

Fink and his team members at Caltech, the U.S. Geological Survey and the University of Arizona are developing autonomous software and have built a robotic test bed that can mimic a field geologist or astronaut, capable of working independently and as part of a larger team. This software will allow a robot to think on its own, identify problems and possible hazards, determine areas of interest and prioritize targets for a close-up look.

The way things work now, engineers command a rover or spacecraft to carry out certain tasks and then wait for them to be executed. They have little or no flexibility in changing their game plan as events unfold; for example, to image a landslide or cryovolcanic eruption as it happens, or investigate a methane outgassing event.

“In the future, multiple robots will be in the driver’s seat,” Fink said. These robots would share information in almost real time. This type of exploration may one day be used on a mission to Titan, Mars and other planetary bodies. Current proposals for Titan would use an orbiter, an air balloon and rovers or lake landers.

In this mission scenario, an orbiter would circle Titan with a global view of the moon, with an air balloon or airship floating overhead to provide a birds-eye view of mountain ranges, lakes and canyons. On the ground, a rover or lake lander would explore the moon’s nooks and crannies. The orbiter would “speak” directly to the air balloon and command it to fly over a certain region for a closer look. This aerial balloon would be in contact with several small rovers on the ground and command them to move to areas identified from overhead.

“This type of exploration is referred to as tier-scalable reconnaissance,” said Fink. “It’s sort of like commanding a small army of robots operating in space, in the air and on the ground simultaneously.”

A rover might report that it’s seeing smooth rocks in the local vicinity, while the airship or orbiter could confirm that indeed the rover is in a dry riverbed – unlike current missions, which focus only on a global view from far above but can’t provide information on a local scale to tell the rover that indeed it is sitting in the middle of dry riverbed.

A current example of this type of exploration can best be seen at Mars with the communications relay between the rovers and orbiting spacecraft like the Mars Reconnaissance Orbiter. However, that information is just relayed and not shared amongst the spacecraft or used to directly control them.

“We are basically heading toward making robots that command other robots,” said Fink, who is director of Caltech’s Visual and Autonomous Exploration Systems Research Laboratory, where this work has taken place.

“One day an entire fleet of robots will be autonomously commanded at once. This armada of robots will be our eyes, ears, arms and legs in space, in the air, and on the ground, capable of responding to their environment without us, to explore and embrace the unknown,” he added.

Papers describing this new exploration are published in the journal “Computer Methods and Programs in Biomedicine” and in the Proceedings of the SPIE.

Source: JPL

Book Review: Magnificent Desolation, by Buzz Aldrin

Magnificent Desolation, the new autobiography by Buzz Aldrin

[/caption]

I very much enjoyed chatting with Buzz Aldrin a couple of weeks ago, for some stories leading up to the 40th anniversary of the July 20, 1969 Apollo 11 landing on the moon. I found him honest, personable and generous with his time.

But when his publicist offered to send a copy of his new book, “Magnificent Desolation,” I didn’t set my expectations too high. I didn’t know what to make of an autobiography by a retired Air Force pilot and astronaut. Doesn’t that history put the “Rocket Hero” pretty squarely in the category of techie or a jock — a non-writer type?

Well, color me impressed. The book arrived late last week, and I turned the last page this morning — looking for more to read!

Courtsey of Buzz Aldrin
Courtsey of Buzz Aldrin

Granted, Aldrin got help when he teamed up with writer Ken Abraham. But no writer can spin a book like “Magnificent Desolation” without an incredible story, and Aldrin is a master of that.

The book opens with a few chapters on the Apollo program that made him famous. Even though I’ve dabbled in some research the past few weeks — including catching up on the movie “In the Shadow of the Moon” and leafing through some books — I learned new details both whimsical and serious.

Who knew, for example, that American astronauts traditionally eat steak and eggs prior to launch? Or that Aldrin is such a font of deep thoughts, which has apparently been true for a long time:

“From space there were no observable borders between nations, no observable reasons for the wars we were leaving behind,” he remembers musing as the Earth got smaller in Apollo 11’s windows.

“Magnificent Desolation” is about as revealing as you can get in personal realms. Aldrin engages in a lengthy discussion of his decade of deep depression and alcoholism following the Apollo years, from which he eventually escaped. At his rock bottom, Aldrin had lost faith in himself, had no vision for his purpose in life, and was failing at his job — as a salesman of Cadillacs.

During our interview, Aldrin said he turned his life around by deciding that he could share his experiences for a greater good.

“Do you continue to descend into an abyss? Or do you try to make a difference with what you know best?” he remembers thinking.

These days, Aldrin lives a life fitting for a hero. He hobnobs with greats in every field, from journalists and athletes to international leaders, scientists and movie stars. He and his wife, Lois, have traveled the world for scuba diving excursions, ski trips and unflagging efforts to promote his primary passion (besides Lois): a return to the collective national motivation that helped fuel the lunar landings. He desperately wants to see America lead the charge toward space exploration — to Mars and/or a moon of Mars, and beyond.

Aldrin admits he’s been criticized in the past, even by some of his astronaut peers, for garnering so much publicity as the second man (after Neil Armstrong) to set foot on the moon.

“The truth was, no other astronaut, active or inactive, was out in the public trying to raise awareness about America’s dying space program. None of them,” he writes. He points out that he is not promoting himself: “I did not want ‘a giant leap for mankind’ to be nothing more than a phrase from the past.”

Besides pushing for a new era of space exploration, the book is also a testament to the benefits of citizen space travel, which Aldrin avidly promotes through his outreach efforts, including his non-profit Sharespace Foundation. Among them: “The United States will capture the lion’s share of the global satellite market,” and “NASA’s planetary probes will become far more affordable.”

Aldrin has used traditional channels to advance his ideas, addressing international audiences of all stripes and testifying before Congress. But the really fun stuff comes when he reaches out to younger audiences. He seems to stop at nothing to reach out to the next generations, to ensure that his space exploration dreams will stay alive.

“I look forward to these things happening during my lifetime,” he writes, “but if they don’t, please keep this dream alive; please keep going; Mars is waiting for your footsteps.”

This review is cross-posted at the writer’s website, anneminard.com.

Fun Buzz Aldrin links:

Buzz Aldrin’s Web site

Training Buzz Lightyear for a NASA mission (YouTube video)

Comical interview with Ali G. (YouTube video)

“Rocket Experience” rap with Snoop Dogg

Other Universe Today Apollo 11 40th anniversary stories:

How to Handle Moon Rocks and Lunar Bugs: A Personal History of Apollo’s Lunar Receiving Lab

Q & A with Apollo 11 Astronaut Michael Collins

LRO Images Apollo Landing Sites (w00t!)

NASA Laments Missing Apollo 11 Film, Makes Do With What’s Left

And finally, the treasure trove: Apollo 11 Anniversary Link-O-Rama

8 Ridiculous Things Bigger Than NASA’s Budget

Astronaut John Grusnfeld on the recent Hubble servicing mission. Credit: NASA

Why do we explore? In the days of Magellan, Columbus and da Gama, undoubtedly the average person thought it was foolish to risk lives and spend large amounts of money to find out what was beyond the horizon. Those explorers didn’t find what they expected, but their explorations changed the world.

What drives us to explore and discover is what we don’t know, and the spirit of exploration inspires us to create and invent so that we can go explore and possibly change the world. We don’t know yet exactly what we’ll find if humans ever go to Mars, Europa or beyond, but if we stay in our caves we’ll never find out. Similarly, space probes and telescopes like Hubble, as well as ground-based telescopes have helped us explore remotely and have facilitated the discovery of so many things we didn’t know — and didn’t expect — about our universe.

However, exploration takes money.

The most often-used argument against space exploration is that we should use that money to alleviate problems here on Earth. But that argument fails to realize that NASA doesn’t just pack millions of dollar bills into a rocket and blast them into space. The money NASA uses creates jobs, providing an opportunity for some of the world’s brightest minds to use their talents to, yes, actually benefit humanity. NASA’s exploration spurs inventions that we use everyday, many which save lives and improve the quality of life. Plus, we’re expanding our horizons and feeding our curiosity, while learning so, so much and attempting to answer really big questions about ourselves and the cosmos.

NASA’s annual budget for fiscal year 2009 is $17.2 billion. The proposed budget for FY 2010 would raise it to about $18.7 billion. That sounds like a lot of money, and it is, but let’s put it in perspective. The US annual budget is almost $3 trillion and NASA’s cut of the US budget is less than 1%, which isn’t big enough to create even a single line on this pie chart.
US Federal Spending.  Credit: Wikipedia
A few other things to put NASA’s budget in perspective:

Former NASA administrator Mike Griffin mentioned recently that US consumers spend more on pizza ($27 billion) than NASA’s budget. (Head nod to Ian O’Neill)

Miles O’Brien recently brought it to our attention that the amount of money Bernie Maddof scammed with his Ponzi scheme ($50 billion) is way bigger than NASA’s budget.

Americans spend a lot of money on some pretty ridiculous things. Returning to that oft-used phrase about spending the money used in space to solve the problems on Earth, consider this: *

Annually, Americans spend about $88.8 billion on tobacco products and another $97 billion on alcohol. $313 billion is spent each year in America for treatment of tobacco and alcohol related medical problems.

Likewise, people in the US spend about $64 billion on illegal drugs, and $114.2 billion for health-related care of drug use.

Americans also spend $586.5 billion a year on gambling. Italian’s also spend quite a bit – according to Stranieri, in 2011 gamblers in Italy spent more than 100 billion euros on gambling!

It’s possible we could give up some other things to help alleviate the problems in our country without having to give up the spirit of exploration.

*the numbers used here are from various years, depending on what was readily available, but range from the years 2000 and 2008.

Life Beyond Earth in 10 Years or Less?

[/caption]

Illustration credit: Robert McCall

Peter Smith feels pretty certain we’ll be finding life on Mars within the next decade. 

Smith, the University of Arizona professor who led NASA’s Phoenix Mars Mission, made his predictions to a spellbound audience during a lecture at the University of Delaware earlier this month, and he discussed his ideas by phone on Thursday. He carries a “sense of optimism” about finding life on Mars, he said, because of the tantalizing clues Phoenix sent to Earth.

“Finding life on Mars would be one of the great discoveries of all time,” he said. “We’re not that far away. The next mission could be the one.”

Phoenix launched in August of 2007 and spent five months in one spot,  controlled by Smith and his Tucson-based crew who directed it to dig and analyze soil samples from an area about the size of a couch. 

Mars’ closest corollary on Earth is the Dry Valleys of Antarctica, Smith said. Although no life was discovered on Mars by Phoenix, tiny organisms inhabit the soils of Antarctica’s Dry Valleys, including a predatory nematode about a sixteenth of an inch long.

 

“Phoenix got me excited because it’s really the next step beyond the Dry Valleys of Antarctica. In the coldest places in the Dry Valleys …  nobody thought anything would live there.” 

Last week, scientists announced the discovery of a biological community living in dark, oxygen-deprived briny pool beneath a glacier near Dry Valleys.

“The idea is on Mars, it’s probably much too cold right now, but in the recent past, the climate has been different,” he said. “It might have been closer to the Dry Valleys during those times. We’re looking at a situation where this may be a periodically habitable zone.”

Some of the Phoenix team members believe liquid water was photographed on the lander’s legs, but Smith isn’t one of them. Still, he admits that Phoenix sent back hints of life that have him on the edge of his seat.

 

“Martian soil is really sticky and clumpy,” Smith said, noting that the probe would get a scoop of soil to pour into its ovens for chemistry experiments, but it would take four days of shaking to get the soil through the screens.

“Many times it takes liquid water to make the soils clumpy like that,” he said, adding the clumpiness could be a result of electrostatic forces.

Phoenix found calcium carbonate in the Martian soil, which typically requires liquid water in its formation process. It saw clouds and falling snow.

Another experiment, the HiRise camera aboard the Mars Reconnaissance Orbiter, spotted near-surface ice as far as 40 degrees latitude, “whereas we thought it was cutting off around 60 degrees,” he said.

And Smith pointed out the recent discovery of methane on Mars. “Where in the heck does methane come from?” he mused. “On Earth, it’s linked with biological functions.”

Besides active volcanoes — which are not known to exist on Mars — another terrestrial source of methane is a mineralization process that happens at tectonic plate boundaries. But he said that doesn’t match what we know about Martian geology either.

On the other hand, “If you had fractures in the soil, and the fractures went down to a wet environment, you could have a biological community down there,” Smith said.

The Phoenix mission was a collaboration of numerous agencies and academic institutions besides the University of Arizona, including NASA’s Jet Propulsion Laboratory in Pasadena, California, Lockheed Martin Space Systems in Denver and scientific institutes in Canada, Denmark, Finland, Germany, and Switzerland.

The mission outlasted its expected time limits by several months, but went into a possibly permanent “Sleeping Beauty” mode when Martian winter hit. It won’t awaken until October if it awakens at all.

Smith said the next mission, the Mars Science Laboratory, will include a large rover the size of a MINI-Cooper, with big tires, that would last at least five years and land near an area of high interest, such as the edge of a canyon. 

“I think the next decade is a very active time for searching for signatures on Mars,” he said, “and my personal belief is we’ll find them.”

Sources: Eurekalert and an interview with Peter Smith

New Bill Would Extend Shuttle Life, but NASA Doesn’t Need the Time

[/caption]

The Senate Budget Committee has given the green light to fund NASA’s shuttle program past the end of 2010, when the program is set to retire.

But NASA isn’t asking for an extension.

Florida Sen. Bill Nelson requested the $2.5 billion provision, which was included in the broader five-year spending plan that passed committee Monday afternoon. His office argues that launching nine missions in 18 months puts too much pressure on the agency, and could compromise safety.

NASA is preparing to launch the shuttle Atlantis on May 12 for a servicing mission of the Hubble Space Telescope, and the eight remaining missions are dedicated to completing the International Space Station. 

“We are confident that we can fly out the shuttle manifest before the end of 2010,” said John Yembrick, a spokesman out of NASA’s Washington headquarters.

Nelson’s office isn’t as optimistic.

“Given that there are roughly only 18 months but nine flights left, we have a concern that may be unrealistic,” said Dan McLaughlin, a spokesman for Nelson’s office.  He cited the Challenger and Columbia accidents, where “the investigation board in both cases identified scheduling pressure as a contributing factor to those accidents.”

orion
Artist's rendering of the next-generation Orion crew exploration vehicle docked to a lunar lander in lunar orbit. (Obsolete configuration.) Credit: Lockheed Martin Corp.

In the past, NASA has been “overly optimistic about schedules for shuttle missions,” McLaughlin said. But in reality, the agency has gotten four or five launches off the ground in each of the past several years. “It doesn’t take but a bad hurricane season and the best laid plans can fall apart. Could NASA do it? Yeah. But a lot of things would have to go right.”

The $2.5 billion provision, if it passes the full Senate and House, would alleviate the pressure, Nelson thinks, by opening up the possibility for additional funding in 2011 — and allow NASA to proceed with safety as a first concern. The measure would soften a firm line both the Bush and Obama administrations have taken on retiring the program by the end of 2010.

The Budget Committee’s decision sends a strong signal that the shuttle shouldn’t be retired on a date-certain, but only when all the missions are completed, Nelson reportedly said immediately after the Thursday vote. 

ares-collage1
Concept of Ares I, left, the crew launch vehicle and Ares V, the cargo launch vehicle. Credit: NASA/Marshall Space Flight Center

Meanwhile, NASA is looking forward to the next generation of launch vehicles, Orion (above, concept credit Lockheed Martin Corp.) and the Ares series. The vehicles are designed to return people to the moon — and perhaps even Mars — to live and explore. The first Ares test flight is planned for later this year.

The gap between the planned shuttle retirement in 2010, and the availability of the next generation launch vehicles, will be five years. During that time the United States is likely to partner with Russia to use Soyuz launch vehicles for low-orbit work and as the space station’s docked emergency vehicle — which is part of the astronauts’ escape plan in the event of debris hits or other dangers aboard the ISS.

It is also possible that commercial vehicles could rise to the challenge before 2015, NASA’s Yembrick said. NASA has awarded two contracts to companies that will deliver cargo to the space station after the retirement of the space shuttle: Orbital Sciences Corp. of Dulles, Virginia, and Space Exploration Technologies (SpaceX) of Hawthorne, California.

“Once they’ve proven that they can successfully deliver cargo, we also may one day look at purchasing crew services,” Yembrick said. “We don’t want to speculate when that may occur.”

Sources: Spaceref, interviews with Dan McLaughlin and John Yembrick.

 

 

 

 

Russia Will Send Life to Phobos

Going where no tardigrade has been before

[/caption]

How ironic. Not content with searching for life on Mars, the Russian space agency and the US-based Planetary Society will soon be sending terrestrial life to the Martian moon Phobos. The mini-interplanetary travellers will consist of bacteria, spores, seeds, crustaceans, insects and fungi. Why? To see how biological life, in various forms, deals with space travel spanning three years.

So if you thought that a human (or monkey) would be the first of Earth’s ambassadors to land on Mars or one of its moons, you’d be very mistaken

The Phobos-Grunt mission profile
The Phobos-Grunt mission profile
Russia has been carrying out a variety of biological space tests to see how life deals with the hazards of spaceflight recently. In one experiment carried out in collaboration with Japanese scientists, a mosquito was attached to the hull of the International Space Station (ISS) to see… what would happen.

The mosquito was a part of the Biorisk project, and the scientists knew the insect had the ability to drop into a “suspended animation” during times of draught in Africa. The African mosquito can turn its bodily water into tricallosa sugar, slowing its functions nearly to a stop. When the rain returns, the crystallised creature is rehydrated and it can carry on its lifecycle. The Biorisk mosquito however survived 18 months with no sustenance, exposed to temperatures ranging from -150°C to +60°C. When returned to Earth, Russian scientists gave the hardy mozzie a health check, declaring:

We brought him back to Earth. He is alive, and his feet are moving.” — Anatoly Grigoryev, Vice President of the Russian Academy of Sciences.

©Gerald Yuvallos/Flickr
Quite happy with living in space, the mosquito ©Gerald Yuvallos/Flickr
Was this insect cruelty of the most extreme kind, or did it serve a purpose? Actually, the mosquito experiment provided an insight to a biological specimen after being exposed to cosmic rays for long periods, and it also showed us that the African mosquito’s natural ability to slip into a defensive coma, only to be revived and appear to be healthy (that is, if it was more than just its feet moving – there was no indication as to whether the little guy was successfully re-integrated into mosquito society). Perhaps the lessons learned from this small test may go to some way of helping us realise the potential for putting future interplanetary astronauts into some kind of biological stasis.

So that’s the idea behind sending creatures into space: we need to understand how animals and plants deal with space travel. This will aid the understanding of how humans will cope in space for long periods, plus we need to understand if there are any harmful effects from growing foodstuffs away from our planet. This is why the Russian space agency wants to go one step further when it launches its Phobos-Grunt mission next year, to send biological specimens on a voyage of a lifetime. A return trip to the Martian moon Phobos.

Say hello to our interplanetary ambassador, the tardigrade (FUNCRYPTA)
Say hello to our interplanetary ambassador, the tardigrade (FUNCRYPTA)
On board, it is hoped the US-based Planetary Society will be able to send a small package filled with 10 different species including tardigrades (“water bears”), seeds and bacteria. The main purpose of this experiment will be to test the panspermia hypothesis, where it is thought that life may travel from planet to planet, hitching a ride on fragments of planetary material. Most of the biological samples will be in a dormant state (i.e. the plant spores), and tests will be carried out when Phobos-Grunt returns to Earth to see if the bacteria survived, seeds germinate and spores… do what ever spores do.

Russia on the other hand has far loftier goals; the space agency will attach a small petting zoo. Inside the Russian experiment will include crustaceans, mosquito larvae (already proven to be enthusiastic space travellers), bacteria and fungi. The Russian experiment will specifically look at how cosmic radiation can effect these different types of life during an interplanetary trip (essential ahead of any manned attempt to the Red Planet).

Naturally, there are some concerns about contamination to the moon (if Phobos-Grunt doesn’t do the “return” part of the mission), but the chances of any extraterrestrial life being harboured on this tiny piece of airless rock are low. Having said that, we just don’t know, so the mission scientists will have to be very careful to ensure containment. Besides, there’s something unsettling about infecting an alien world with our bacteria before we’ve even had the chance to get there ourselves…

Source: Discovery

Robots Could Prepare Moon Outpost Site

Small digger/loader on the Moon. Creidt: Astrobotic Technology

[/caption]

A new type of lunar robots is being designed which could help prepare locations on the Moon for human outposts and landing pads. With supervised autonomy, small robots the size of riding mowers and weighing 300 kg or less could prepare a site in about 6 months, says a new study by Astrobotic Technology Inc. in cooperation with Carnegie Mellon University’s Robotics Institute.

Anyone else having visions of Wall-E on the Moon?

Using small robots would offer an alternative to bringing large loaders to the Moon, as Caterpillar, Inc. has proposed, and is working on details with NASA of using a big skid steer loader on the Moon (see previous UT article, “Heavy Construction on the Moon.”)

“NASA faces a challenge in planning the layout for its outpost, which is expected to begin operations in 2020,” said William “Red” Whittaker, chairman and chief technical officer of Astrobotic and a Carnegie Mellon professor of robotics. “For efficient cargo transfer, the landing site needs to be close to the outpost’s crew quarters and laboratories. Each rocket landing and takeoff, however, will accelerate lunar grit outwards from the pad. With no atmosphere to slow it down, the dry soil would sandblast the outpost.”

The research examined two potential solutions: 1) construction of a berm around the landing site, and 2) creation of a hard-surface landing pad using indigenous materials.

In the first solution, researchers found that two rovers weighing 330 pounds each would take less than six months to build a berm around a landing site to block the sandblasting effect. A berm 8.5 feet tall in a 160-foot semi-circle would require moving 2.6 million pounds of lunar dirt. Robots this size can be sent to NASA’s planned polar outpost site in advance of human expeditions. Astrobotic Technology Inc. has proposed that landing site preparation be provided by commercial ventures.

In the second solution, researchers showed how small robots could comb the lunar soil for rocks, gathering them to pave a durable grit-free landing pad, said John Kohut, Astrobotic’s chief executive officer. “This might reduce the need to build protective berms. To discern the best approach, early robotic scouting missions need to gather on-site information about the soil’s cohesion levels and whether rocks and gravel of the right size can be found at the site.”

Astrobotic's plan for lunar rover for Google Lunar X-PRIZE. Credit: Astrobotic Tech
Astrobotic's plan for lunar rover for Google Lunar X-PRIZE. Credit: Astrobotic Tech

Whittaker is directing the development of Astrobotic’s first lunar robot, which is vying to win the $20 million Google Lunar X-PRIZE by visiting the Apollo 11 landing site and transmitting high-definition video to Earth. They are looking to launch in December 2010. The robot has been undergoing field trials for several months.

Details of the study are available at www.astrobotictech.com.

The Journey of Space Exploration: Ex-Astronaut Views on NASA

Why has "one small step for man" turned into "one giant leap backward" for NASA? (NASA)

[/caption]It reads like the annual progress report from my first year in university. He lacks direction, he’s not motivated and he has filled his time with extra-curricular activities, causing a lack of concentration in lectures. However, it shouldn’t read like an 18 year-old’s passage through the first year of freedom; it should read like a successful, optimistic and inspirational prediction about NASA’s future in space.

What am I referring to? It turns out that the Houston university where President John F. Kennedy gave his historic “We go to the Moon” speech back in 1962 has commissioned a report, recommending that NASA should give up its quest for returning to the Moon and focus more on environmental and energy projects. The reactions of several astronauts from the Mercury, Apollo and Shuttle eras have now been published. The conclusions in the Rice University report may have been controversial, but the reactions of the six ex-astronauts went well beyond that. They summed up the concern and frustration they feel for a space agency they once risked their lives for.

At the end of the day, it all comes down to how we interpret the importance of space exploration. Is it an unnecessary expense, or is it part of scientific endeavour where the technological spin-offs are more important than we think?

John F. Kennedy speaking at Rice University in 1962. How times have changed (NASA)
John F. Kennedy speaking at Rice University in 1962. How times have changed (NASA)
The article published in the Houston Chronicle website (Chron.com) talks about the “surprising reactions” by the six former astronauts questioned about Rice University’s James A. Baker III Institute for Public Policy recommendation for NASA. However, I’d argue that much of what they say is not surprising in the slightest. These men and women were active in the US space agency during some of the most profound and exciting times in space flight history, it is little wonder that they may be a little exacerbated by the current spaceflight problems that are besieging NASA. The suggestion that NASA should give up the Moon for more terrestrial pursuits is a tough pill to swallow, especially for these pioneers of spaceflight.

It is widely accepted that NASA is underfunded, mismanaged and falling short of its promises. Many would argue that this is a symptom of an old cumbersome government department that has lost its way. This could be down to institutional failings, lack of investment or loss of vision, but the situation is getting worse for NASA. Regardless, something isn’t right and now we are faced with a five year gap in US manned spaceflight capability, forcing NASA to buy Russian Soyuz flights. The Shuttle replacement, the Constellation Program, has even been written off by many before it has even carried out the first test launch.

So, from their unique perspective, what do these retired astronauts think of the situation? It turns out that some agree with the report, others are strongly opposed to it, whereas all voice concern for the future of NASA.

Kathryn Thornton, before a Shuttle mission (NASA)
Kathryn Thornton, before a Shuttle mission (NASA)
Walt Cunningham flew aboard Apollo 7 in 1968. It was the first manned mission in the Apollo Program. At an age of 76, Cunningham sees no urgency in going back to the Moon but he is also believes the concerns about global warming are “a great big scam.” His feelings about global warming may be misplaced, but he is acutely aware of the funding issue facing NASA, concerned the agency will “keep sliding downhill” if nothing is done.

Four-time Shuttle astronaut Kathryn Thornton, agrees that the agency is underfunded and overstretched and dubious about the Institute’s recommendation that NASA should focus all its attention on environmental issues for four years. “I find it hard to believe we would be finished with the energy and environment issues in four years. If you talk about a re-direction, I think you talk about a permanent re-direction,” Thornton added.

Gene Cernan, commander of the 1972 Apollo 17 mission, believes that space exploration is essential to inspire the young and invigorate the educational system. He is shocked by the Institute’s recommendation to pull back on space exploration. The 74 year old was the last human to walk on the Moon and he believes NASA shouldn’t be focused on ways to save the planet, other agencies and businesses can do that.

It just blows my mind what they would do to an organization like NASA that was designed and built to explore the unknown.” — Gene Cernan

Apollo astronaut Gene Cernan covered with moon dust (NASA)
Apollo astronaut Gene Cernan covered with moondust (NASA)
John Glenn, first US astronaut to orbit the Earth and former senator, is appalled at the suggestion of abandoning projects such as the International Space Station. Although Glenn, now 87, agrees with many of the points argued in the report, he said, “We have a $115 billion investment in the most unique laboratory ever put together, and we are cutting out the ability to do research that may have enormous value to everybody right here on the Earth? This is folly.”

Sally Ride, 57, a physicist and the first American woman to fly into space believes the risky option of extending the life of the Shuttle should be considered to allow US manned access to the space station to continue. The greater risk of being frozen out of the outpost simply is not an option. However, she advocates the report’s suggestion that NASA should also focus on finding solutions to climate change. “It will take us awhile to dig ourselves out,” she said. “But the long-term challenge we have is solving the predicament we have put ourselves in with energy and the environment.”

Franklin Chang Diaz, who shares world’s record for the most spaceflights (seven), believes that NASA has been given a very bad deal. He agrees with many of the report’s recommendations, not because the space agency should turn its back on space exploration, it’s because the agency has been put in an impossible situation.

NASA has moved away from being at the edge of high tech and innovation,” said Chang Diaz. “That’s a predicament NASA has found itself in because it had to carry out a mission to return humans to the moon by a certain time (2020) and within a budget ($17.3 billion for 2008). It’s not possible.”

In Conclusion

This discussion reminds me of a recent debate not about space exploration, but another science and engineering endeavour here on Earth. The Large Hadron Collider (LHC) has its critics who will argue that this $5 billion piece of kit is not worth the effort, where the money spent on accelerating particles could be better spent on finding solutions for climate change, or a cure for cancer.

You did NOT just say that! Brian Cox's expression says it all... (still from the BBC's Newsnight program)
You did NOT just say that! Brian Cox's expression says it all... (still from the BBC's Newsnight program)
In a September 2008 UK televised debate on BBC Newsnight between Sir David King (former Chief Scientific Advisor for the UK government) and particle physicist Professor Brian Cox, King questioned the the importance of the science behind the LHC. By his limited reasoning, the LHC was more “navel-searching”, “curiosity-driven” research with little bearing on the advancement of mankind. In King’s view the money would be better spent on finding solutions to known problems, such as climate change. It is fortunate Brian Cox was there to set the records straight.

Prof. Cox explained that the science behind the LHC is “part of a journey” where the technological spin-offs and the knowledge gained from such a complex experiment cannot be predicted before embarking on scientific endeavour. Indeed, advanced medical technologies are being developed as a result of LHC research; the Internet may be revolutionized by new techniques being derived from work at the LHC; even the cooling system for the LHC accelerator electromagnets can be adapted for use in fusion reactors.

The point is that we may never fully comprehend what technologies, science or knowledge we may gain from huge experiments such as the LHC, and we certainly don’t know what spin-offs we can derive from continued advancement of space travel technology. Space exploration can only enhance our knowledge and scientific understanding.

If NASA starts pulling back on endeavours in space, taking a more introverted view of finding specific solutions to particular problems (such as finding a solution to climate change at the detriment to space exploration, as suggested by the Rice University report), we may never fully realise our potential as a race, and many of the problems here on Earth will never be solved…

Sources: Chron.com, Astroengine.com