Cutting Edge

(Credit: NASA)

The International Space Station isn't just an orbiting laboratory, spaceship testing ground, and multinational geek fest--it's also the world's highest (250 miles) and fastest (17,500 mph) computer network. We burrow under its metal skin and siphon out its most interesting specifications, like some kind of star-hopping alien data vampires (but without the plutonium-coated fangs).

Read more of "Space Station IT: High technology" at Crave UK.

KENNEDY SPACE CENTER, Fla.--A preliminary look at data from NASA's Ares I-X test flight Wednesday shows the towering rocket performed as well or better than computer modeling predicted during the climb out of the dense lower atmosphere, a senior NASA manager said Friday.

One of three huge parachutes failed to inflate during the spent booster's descent to the Atlantic Ocean and a second chute only inflated halfway, resulting in a hard splash down that caused the rocket's case to buckle.

NASA's Ares I-X rocket blasts off from pad 39B at the Kennedy Space Center. Engineers say data from the test flight shows the booster met or exceeded predictions from computer modeling.

(Credit: NASA)

But Mission Manager Bob Ess said the parachute system, flying for the first time, was designed for NASA's planned Ares 1 rocket, which is 15 percent lighter than the test version, and that engineers will have plenty of time to correct whatever went wrong.

"No one is concerned about it," Ess said. "In fact, the parachute guys were ecstatic, was their words, (about) the information they got from this flight. They really wanted to test this out."

The Ares I-X rocket was designed to match the characteristics of NASA's planned shuttle replacement, the more powerful Ares I. The test version featured a four-segment shuttle booster, a dummy fifth segment housing guidance and control equipment and an unpowered mockup of the rocket's upper stage and crew capsule.

The 327-foot-tall test rocket was launched Wednesday from shuttle complex 39B at the Kennedy Space Center. The major goals of the unmanned six-minute flight were to collect engineering data on how the tall, slender rocket flew through the lower atmosphere, how the structure responded to aerodynamic and acoustic forces and how the new parachute system, scaled for the planned Ares I, performed.

During the initial seconds of flight, the rocket's nozzle moved 1 degree as planned to help the booster "walk off" the pad, preventing its hot exhaust plume from hitting the upper sections of the shuttle service gantry. As expected, the plume caused minor damage to the lower sections of the gantry, but Ess said that would not be a problem for the new service tower that will be used for Ares rockets.

KENNEDY SPACE CENTER, Fla.--Launch of NASA's Ares I-X rocket on a planned $445 million test flight was delayed 24 hours Tuesday because of bad weather and an errant freighter that briefly strayed into the off-shore danger area.

"For everyone, great job today. You gave it a great shot," Launch Director Ed Mango told the team. "We had some opportunities and just couldn't get there, weather didn't cooperate. But good work today."

The Ares I-X rocket atop pad 39B at the Kennedy Space Center during launch preparations.

(Credit: Bill Ingalls/NASA)

Launch was rescheduled for 8 a.m. Wednesday. Forecasters are predicting a 60 percent chance of acceptable weather during a four-hour launch window, with lighter winds and less cloud cover. It is not yet clear whether Thursday is an option if additional problems force another delay Wednesday.

NASA began Tuesday's launch campaign at 1 a.m. EDT with the start of a seven-hour countdown. With forecasters concerned about high clouds, showers, and friction-induced static charge buildups, NASA passed up the 8 a.m. opening of the window and the countdown remained in an extended hold at the T-minus four-minute mark in hopes conditions would improve.

In a bit of a surprise given a 60 percent "no-go" forecast, conditions improved and NASA was preparing to come out of the hold and proceed to launch when a freighter strayed into the launch danger zone.

The ship was contacted and immediately began moving out of the area. NASA reset launch for 10:49 a.m., but the delay caused by the freighter held things up long enough for clouds to move in. Two minutes and 37 seconds before liftoff, weather officer Kathy Winters ordered a hold.

The countdown was recycled back to T-minus four minutes and holding in hopes conditions would improve.

Throughout the morning, clouds rolled over the Kennedy Space Center from the west and while occasional breaks were seen on radar, the timing didn't work out for NASA. Around 11:20 a.m., launch managers called off the attempt.

"It looks like we're not going to get there with weather on these opportunities and per our discussions, I guess we're looking for your recommendations and what you would like us to implement from a launch perspective," Test Director Jeff Spaulding said to Mango.

"Your team has done outstanding getting the vehicle ready," Mango said. "Weather (officer) has been outstanding in trying to help us. We're not going to be go today. So we can set up for a scrub."

There are no technical issues with the Ares I-X rocket. But in attempting to launch Tuesday, engineers pulled a sock-like cover from an air data probe at the very tip of the rocket that is designed to measure the atmospheric conditions ahead of the launcher.

Because of the booster's height, and the need to use a shuttle launch pad with a gantry that is much shorter than the rocket, the cover had to be removed by technicians, atop the pad's service gantry, manually pulling a long lanyard. The protective cover hung up at the base of the probe, but the technicians were able to pull it free after a few minutes of energetic tugging.

The cover cannot be re-installed. If rain water gets into the probe between now and launch, it could prevent accurate readings. NASA managers said earlier that was an acceptable condition and that the data, while desirable, was not required for launch.

Editor's note: A 4,000-word mission preview is available on the CBS News Space Place Breaking News page.

Amid work to ready NASA's Ares I-X rocket for a long-awaited test flight next week, a presidential panel charged with reviewing the nation's manned space program submitted its completed report Thursday, concluding NASA's planned shuttle replacement will cost too much and take too long to build to be a viable option.

Even so, panel members said they looked forward to the $445 million test flight Tuesday and the data it will generate to help validate computer models and processes that will be useful in any future rocket design efforts.

"We do think it's appropriate to fly the Ares I-X," said Norman Augustine, former CEO of Lockheed Martin and chairman of the U.S. Human Spaceflight Plans Committee. "We think there are important things to be learned that will help the program."

Norman Augustine, left, chairman of a presidential review of manned space options, and panel member Edward Crawley, right, brief reporters Thursday.

(Credit: NASA)

The panel's completed report contained no major surprises--an executive summary was released in late September that included the same five basic options for future manned space activity--but the coincidental timing of the report and next week's test flight highlighted the uncertain future of NASA's plans to replace the space shuttle and return to the moon.

"The premier conclusion of the committee is the human spaceflight program the United States is currently pursuing is one that's on an unsustainable trajectory," said Augustine. "We say that because of a mismatch between the scope of the program and the funds to support the program. That's of great concern to us because human spaceflight, where safety accounts for everything, is a very unforgiving sort of pursuit."

In the wake of the 2003 Columbia disaster, the Bush administration ordered NASA to finish the International Space Station and retire the shuttle by the end of 2010, and to develop new rockets and spacecraft to return astronauts to the moon by the early 2020s.

The plan NASA developed--the Constellation program--calls for a new rocket known as the Ares I, and an Apollo-like crew capsule called Orion, to ferry astronauts to and from low-Earth orbit. A large, unmanned heavy lift rocket known as the Ares V then would be built to launch Orion capsules and lunar landers to the moon.

President Obama expressed general support for the Constellation program during the presidential campaign, but earlier this year he ordered an independent review of NASA's manned space program in the context of the current budget environment. At the same time, the Office of Management and Budget cut some $3 billion from NASA's projected "out-years" budget, money earmarked for development of the Ares V.

Against that uncertain backdrop, NASA pressed ahead with development of the Orion capsule and the Ares I booster envisioned as a replacement for the space shuttle. The new rocket features an extended shuttle solid-fuel booster, a hydrogen-fueled upper stage and an escape rocket that could pull the crew capsule to safety in an emergency.

NASA plans to launch a test version of the rocket Tuesday on a sub-orbital flight to verify computer models being developed to help design the Ares I. For the test flight, a standard four-segment shuttle booster is being used, along with a dummy upper stage and an Orion capsule simulator that duplicate the mass and shape of the Ares I rocket.

"We've reviewed the Ares I and Orion elements of that program, which are the two parts that are principally underway," Augustine said Thursday. "We found those programs to be reasonably well managed, we found them to have technical problems of a nature that's probably not uncommon for complex undertakings of this type.

"It's our belief that given ample time and funds, the engineers at NASA and their contractors are certainly capable of solving those problems. So we think the program within itself has a very good likelihood of succeeding. The issue that comes up under Ares I is whether the program is useful when it has succeeded because of a mismatch of the time schedules and the costs with what will be needed for it to do."

While that observation suggests Augustine and the panel do not support continued development of Ares I, panel member Leroy Chiao, a former astronaut, said "it's important to emphasize that we were presenting options, not recommendations."

"Despite what's been going on in the blogosphere, the panel didn't come up saying (NASA) should cancel Ares I, which a lot of people think we actually did," he said in a telephone interview. "It's really up to the decision makers as to which path to go down. So Ares I is not dead by a long shot."

NASA believes the Ares I could be ready to fly by 2015. The Augustine panel concluded it would take until at least 2017 to complete the work, coming on line too late to provide more than token support to the International Space Station. In the meantime, NASA will be forced to buy seats on Russian Soyuz rockets, at $50 million per ticket, to get U.S. astronauts to and from the lab complex.

The Augustine report also concluded that NASA will be unable to extend human exploration beyond low-Earth orbit without additional funding, suggesting an additional $3 billion per year, plus a hedge against inflation, to fund a realistic space exploration program.

The panel did not make recommendations, but members seem to favor a commercially developed launch system to get astronauts to low-Earth orbit and a government-developed heavy lift rocket to extend human exploration to the moon and beyond.

The so-called "flexible path" option presented by the Augustine panel would allow NASA to launch orbital moon missions and even flights around Mars or to its moons by the early to mid 2020s, while long-term development of landers and associated hardware is developed in parallel.

"The current plan focuses on going to the moon (with) the longer term goal of going to Mars," Augustine said. "There are a lot of things one could do along the way that are very interesting, that let you build up gradually to the immense undertaking of the Mars program.

"The sort of thing we're thinking of, one could fly circumlunar missions, you could circumnavigate Mars, you could land on an asteroid, a near-Earth object, you could land on Phobos or Deimos, the martian moons, and do some very exciting science from there. It seems to us that is a more sensible program than to wait 15 years or so for the first major event."

A White House spokesman thanked the panel for its report, saying "the president has on numerous occasions confirmed his commitment to human space exploration, and the goal of ensuring that the nation is on a vigorous and sustainable path to achieving our boldest aspirations in space."

"Against a backdrop of serious challenges with the existing program, the Augustine committee has offered several key findings and a range of options for how the nation might improve its future human space flight activities," he said. "We will be reviewing the committee's analysis, and then ultimately the president will be making the final decisions."

I have tried to avoid the Balloon Boy, his dad, and all who sail in this online/offline/out-of-line clattermaran.

However, thanks to CBS News, I have learned that Richard Heene once appeared on a fine YouTube extravaganza called The Psyience Detectives and offered 15 reasons why our haggard old world will end on December 21, 2012.

I have no idea if the world will end in 2012, though I suspect Richard Heene doesn't know either. And yet there is something quite eerie that he should assault our eyes and ears in the same week that a movie called "2012" has forced NASA to address all the 2012 doomsdayers.

You see, the folks behind the movie decided it might be quite fun to launch a Web site, InstituteforHumanContinuity.org. The site suggests that "a mysterious celestial body will enter Earth's orbit in 2012 with disastrous consequences." It also offers you the chance to enter a survival lottery that gives you just a chance of ringing in 2013. Applications are, naturally, limited and it seems as if there has already been a huge influx of wise and frightened people from each continent--interestingly, it seems Australians have so far led the pack of those entering the lottery.

Now, you might be wise, and even Australian, and therefore be able to see through this Beverley Hills bunkum. However, NASA is taking this site--or at least the fears it might perpetuate--so seriously that it has launched one of its astronomers, David Morrison, to attack this piffle-peddling.

When it comes to space, I believe the police and NASA. Mostly.

(Credit: CC Dave Friedel/Flickr)

According to the Independent, Morrison, who works in NASA's Astrobiology Institute, has already received more than 1,000 missives from the concerned. These are not those who merely fear they might not be able to view reality TV in 2013.

"I've even had cases of teenagers writing to me saying they are contemplating suicide because they don't want to see the world end. I think when you lie on the Internet and scare children in order to make a buck, that is ethically wrong," Morrison told the Independent.

The movie's site appears to be nourished by the same notions that incited Balloon Boy's dad: Old Sumerian starmen talked of "ancient astronauts" and supposedly predicted a bit of an earthly disaster in 2012, a thought that was picked up, according to Morrison, by fiction in relatively recent times.

Before we knew it, there were whispers about the planet Nibiru (here's just one on YouTube), which on the "2012" site has become Planet X, a planet that is allegedly being tracked by some of the world's finest scientists.

On the NASA site, Morrison goes into heartening detail about the Nibiru nonsense.

But perhaps the most joyous part of his answers to 2012 questions is when he confesses he had to go to the world's greatest online encyclopedia to learn of Sony Pictures' insidious marketing techniques: "I learned from Wikipedia that creating this sort of fake Web site is a new advertising technique called 'viral marketing,' by analogy with computer viruses."

The search for celestial riches from celestial fears will never go away. However, Balloon Boy's parents have run into a spot of bothersome police scrutiny, and I have heard one or two whispers that production of the "2012" movie is, well, towering inferno of cash that might end up in ashes.

Meanwhile, the mythbusters at NASA stand strong and united against these deleterious influences in our culture.

KENNEDY SPACE CENTER, Fla.--NASA's towering Ares I-X rocket was hauled to the launch pad early Tuesday for blastoff October 27 on a $445 million unmanned test flight that likely will play a major role in the ongoing debate about NASA's post-shuttle manned space program.

The slow trip to pad 39B began at 1:39 a.m. EDT Tuesday when a powerful crawler-transporter carrying the Ares I-X rocket and its mobile launch platform slowly pulled out of the Vehicle Assembly Building at the Kennedy Space Center. Powerful spotlights illuminated the vehicle as it emerged from the VAB, providing a spectacular view of the slender white rocket against the dark of a cloudy night.

The Ares I-X rocket begins the slow trip from the Vehicle Assembly Building to launch pad 39B for work to ready the booster for launch Oct. 27.

(Credit: Justin Ray/Spaceflight Now)

The tip of the 327-foot-tall rocket, anchored to the mobile launch platform by four massive bolts at the base of the booster's flared aft skirt, was expected to sway back and forth up to a foot during rollout, depending on the wind and other factors. But data from sensors measuring stresses on the four hold-down posts indicated the rocket was stiffer than computer models suggested and the booster was mounted atop pad 39B without incident by 9:17 a.m.

"This is great, this is huge," said Bob Ess, the Ares I-X mission manager. "This is a milestone that's been in our planning for years, rollout to the pad. It's hard to believe it's here. We've been doing this for three-and-a-half, four years and there it is, all done. It's ready to fly."

Liftoff is targeted for 8 a.m. on October 27. Backup opportunities are available October 28 and 29 if needed.

The Ares I rocket is a key element in NASA's post-shuttle Constellation program, which calls for replacing the iconic orbiters with a safer, lower-cost rocket to ferry astronauts to low-Earth orbit and development of a large, unmanned heavy lift rocket - the Ares V - that would support eventual expeditions to the moon.

The Obama administration currently is reassessing NASA's manned space program and evaluating five options developed by an independent panel of space experts led by former Lockheed Martin CEO Norman Augustine. Only one of the five options includes the Ares I. But in recent hearings, lawmakers expressed reluctance to scrap the Constellation architecture and it's not yet clear what action the Obama administration might take, or when a decision will be made.

Given that backdrop in the policy arena, the planned test flight of the Ares I-X could prove critical to the future of the Constellation program. While a success would not guarantee a continuation of Constellation, a failure could prove fatal.

"You can't avoid that," former NASA Administrator Mike Griffin, who oversaw the implementation of the Constellation program, said in an interview. "Now, I'll say right on the heels of that remark I think that's regrettable. You don't hinge decision making on one test flight. I mean, that's not good engineering. But I think it's unavoidable that policy makers will look to the success or failure of this flight as a key to future decisions."

The 1.8-million-pound Ares I-X rocket is made up of a four-segment shuttle solid-fuel booster, a dummy fifth segment, a dummy second stage, and a mockup of an Orion crew capsule and escape rocket. More than 700 sensors are mounted on the rocket to determine actual performance and the stresses the vehicle experiences, along with three television cameras.

NASA's Ares I-X rocket is moved into position atop pad 39B at the Kennedy Space Center.

(Credit: William Harwood)

Like any shuttle booster, the Ares I-X will fire for two minutes, boosting the vehicle to an altitude of about 130,000 feet and a velocity of nearly five times the speed of sound. At that point, roughly 43 miles due east of the Kennedy Space Center, the first stage will separate from the dummy upper stage and fall to the Atlantic Ocean in a test of new parachutes designed for the operational Ares I. The dummy upper stage, which will not be recovered, will crash into the ocean some 147 miles from the space center.

The cost of the Ares I-X project, including the rocket, launch pad modifications, computer modeling and data analysis, is expected to be around $445 million.

"We're incredibly excited to be on the cusp of flying the system, seeing what Ares I can do," Jeff Hanley, Constellation program manager at the Johnson Space Center in Houston, told CBS News.

The goals of the test flight are to verify computer models and flight characteristics during the critical first two minutes of flight when aerodynamic stresses are most severe.

While the real Ares I rocket features a first-stage booster with five fuel segments, engineers say the four-segment Ares I-X vehicle will closely mimic the flying characteristics of the manned version.

Engineers are especially interested in the acoustic environment a few seconds after launch, when the reflected sound of the accelerating booster hits the vehicle, causing vibrations that will be transmitted through the structure, and later, when the rocket accelerates through the speed of sound and then experiences maximum dynamic pressure, or "max Q."

A space shuttle typically experiences between 720 and 750 pounds per square foot at max Q, but Ares 1-X will experience around 850 psf. Data from the test flight will tell engineers what sort of environmental conditions sensitive electronics might be subjected to and whether mitigations are needed.

Other areas of interest are longitudinal thrust oscillations and how much the vehicle rolls about its long axis.

Based on data from recent shuttle flights and the test firing of a five-segment Ares booster in Utah, Hanley said engineers do not believe thrust oscillation, a phenomenon that occurs toward the end of a booster's firing, is a major problem. Even so, current plans for the Ares I rocket call for springs, part of a passive "soft-ride" system, to be used between the first and second stages and between the second stage and the Orion crew capsule to damp out any significant vibrations.

Engineers also are studying an innovative system that would use the mass of the second-stage liquid oxygen in an eventual manned rocket to damp out unwanted vibration.

Roll control also doesn't appear to be a major issue, engineers say. All solid-fuel rockets experience some amount of roll due to the behavior of the high-speed exhaust plume and Ares I-X is equipped with roll control thrusters on the dummy second stage to counteract any unwanted motion.

Another issue involves the rocket's sideways drift as it climbs away from the launch pad. For the Ares I-X launch, the booster's nozzle will be canted slightly just after ignition to ensure a "walk-off" away from the launch pad gantry. This is not intended to prevent a crash into the tower, which engineers say is not a concern. Rather, it is to prevent the rocket's exhaust plume from damaging the pad if the launch-day winds push it toward the gantry.

A Russian Soyuz spacecraft carrying commander Gennady Padalka, flight engineer Michael Barratt, and Cirque du Soleil founder Guy Laliberté undocked from the International Space Station on Saturday and plunged to a successful landing in Kazakhstan early Sunday.

Descending under a big orange-and-white parachute, the Soyuz TMA-14's descent module settled to a jarring rocket-assisted touchdown at 12:32 a.m. EDT (10:32 a.m. local time) Sunday to close out a 50-minute descent from orbit. Russian recovery forces, including U.S. and Russian flight surgeons, monitored the final stages of the descent before moving in to provide assistance, opening the capsule's hatch within about six minutes.

A few minutes after that, video from the landing site showed the crew members resting comfortably in chairs draped with blankets, with Laliberté wearing his familiar red clown nose. Padalka could be seen enjoying an apple as he and Barratt chatted with support personnel.

The Soyuz TMA-14 crew after landing Sunday. Left to right: Guy Laliberté, wearing a red clown nose, commander Gennady Padalka, and flight engineer Michael Barratt.

(Credit: Bill Ingalls/NASA)

For Padalka and Barratt, launched March 26, touchdown closed out a marathon 199-day stay in orbit that was highlighted by the expansion of the crew from three to six astronauts and cosmonauts. Padalka, veteran of a flight to the old Mir space station and two expeditions aboard the ISS, boosted his spaceflight total to 586 days, putting him sixth on the list of most experienced space fliers.

Laliberté, a Canadian billionaire, is believed to have paid around $35 million to spend nine days aboard the station as a tourist. He took off September 30 with cosmonaut Maxim Suraev and NASA flight engineer Jeffrey Williams, who remained behind aboard the station as part of the six-member Expedition 21 crew.

Padalka, Barratt, and Laliberté undocked from the space station's Pirs airlock module at 9:07 p.m. Saturday. Padalka made the trip back to Earth strapped into the central descent module's center seat with Barratt, serving as flight engineer, to his left and Laliberté to his right.

"Gennady, good luck," Suraev radioed from the station as the Soyuz pulled away. "You look wonderful against the backdrop of black space. It's amazing, I don't have enough words."

"You'll do great, I just know it," Padalka replied.

"Good luck to all of you," Suraev said. "Stay safe, have a nominal landing. I hope you do well after you get back and I hope you'll be running later today, once you're on the ground."

"OK, well Max, we wish you a great time aboard the station," Padalka said. "We'll see you sometime in spring. And by the way, call me if you have any questions, because I know you will."

The Soyuz TMA-14's braking rockets fired on time at 11:40 p.m. for about four minutes and 24 seconds, slowing the ship by about 258 mph to drop it out of orbit.

The lower propulsion module and the upper orbital module separated from the central descent module just after midnight, about three minutes before the components fall into the discernible atmosphere at an altitude of 64 miles. The separation sequence went smoothly, setting up a normal descent to the planned landing site as opposed to a steeper "ballistic" trajectory.

Landing near Arkalyk, Kazakhstan, was uneventful, although a brisk wind pulled the craft over on its side after touchdown.

The Soyuz TMA-14 spacecraft descending toward touchdown in Kazakhstan.

(Credit: Bill Ingalls/NASA)

In an interview with CBS News last week, Barratt said he was looking forward to a reunion with his wife and five children.

"I'm really going to miss the station," he said. "Just floating and flying here are tremendous and I would say after six-and-a-half months up here, I can now float and fly fairly proficiently. It's takes a little bit of time to really adapt to this, what my friend Shannon Lucid would call 'deep adaptation' to space flight, it really does take some time and I think I've finally gotten there.

"The Earth views are just amazing, I'm going to miss those. As much as anything, I'm going to miss the time around the galley table with this crew. We really worked well together and had a lot of fun. But the big magnet on the ground, of course, is my family. I have a wonderful, crazy family that I've really missed a lot that I'm looking forward to getting back to them."

Asked about re-adaptation to gravity after an extended stay in weightlessness, Barratt, a flight surgeon, said a new resistive exercise machine had helped him stay in shape.

"I'm in about as good shape as I can be up here," he said. "We've got a new resistive exercise machine which I've been working on fairly diligently for the last six-and-a-half months and it's the first time we've really had that kind of loading in space. We have the treadmill, of course, and the bike and I've tried to hit every session of exercise I can and I think I'm about as good as I can be.

"I'm not a young guy anymore and there are certainly some challenges associated with re-entry and getting back to the gravity vector. But I'm certainly going to give it my best shot and hopefully go through it OK and as always, try to take meticulous notes about it."

Padalka was replaced as commander of the space station by European Space Agency astronaut Frank De Winne. His crew, known as Expedition 21, includes Suraev, Williams, NASA astronaut Nicole Stott, cosmonaut Roman Romanenko, and Canadian astronaut Robert Thirsk.

"Our mission was very, very long and very productive and, I would say, very eventful," Padalka said last week. "The main goal of our mission was six-person crew, which was started up in June...Right now, we are ready to go home, and I hope space station will be left in a great operational condition for the next commander and the next crew."

Romanenko, Thirsk, and De Winne were launched to the station on May 27. Stott was launched aboard the shuttle Discovery Aug. 28 and she plans to return to Earth in November with the crew of the shuttle Atlantis. De Winne, Thirsk, and Romanenko are scheduled to come home Dec. 1, briefly leaving the station with just two crew members: Williams, serving as commander of Expedition 22, and Suraev. Three fresh crew members--cosmonaut Oleg Kotov, astronaut Timothy Creamer, and Japanese astronaut Soichi Noguchi--are scheduled for launch December 21.

In a brute-force search for ice on the moon, an empty 5,000-pound rocket stage traveling twice as fast as a rifle bullet crashed into a permanently shadowed crater near the moon's south pole Friday, presumably blasting out tons of debris for examination by an instrumented probe that carried out its own kamikaze plunge four minutes later.

While the initial impact at 4:31 a.m. PDT did not prove especially dramatic--it was not even visible in real-time video from the Lunar Crater Observation and Sensing Satellite (LCROSS)--scientists said a camera sensitive to temperature variations clearly recorded the flash of the Centaur rocket's catastrophic crash.

Three successively zoomed-in views showing the impact of a Centaur rocket stage in a dark crater on the moon as viewed by NASA's LCROSS probe minutes before its own destruction.

(Credit: NASA)

More important, spectroscopic data indicated the presence of material of some sort above or near the impact point in a murky crater known as Cabeus, and instruments aboard NASA's Lunar Reconnaissance Orbiter observed the Centaur crater and confirmed a plume of debris. But it was not immediately clear how extensive the plume was or how much material was blasted out.

Principal investigator Anthony Colaprete said it would take several days to analyze the data from the $79 million LCROSS experiment and reach a consensus on whether or not water ice was, or was not, detected.

"Life is full of surprises, we want to be careful and not make a false negative or a false positive claim," he told reporters after the impact. "I'm excited we saw variations in the spectra because that means we saw something, and it was not just blackness. The information's there, we just need to get to it."

Asked if he had seen anything in the initial data to indicate the presence of ice, Colaprete said he had not yet had time to look for the telltale signals.

"We're going to take our time and build up a case for water in the ejecta, if it's there, or a case against it if it's not there," he said. "And then understand if we're seeing variations, what do these variations mean? We've got to understand that before we say anything."

Interestingly, a closeup of the thermal flash of the Centaur impact showed an elongated smear of light and not a concentrated flare as one might expect from a near straight-in impact. Colaprete said his team would look into what that might mean. Topographic data collected by other satellites indicated a relatively flat floor where the impact occurred.

LCROSS was launched June 18 as a companion payload to NASA's $504 million Lunar Reconnaissance Orbiter spacecraft. Working in a 31-mile-high orbit, LRO is designed to create a high-resolution map of the moon's surface to help identify sites for future manned missions.

It also will measure the solar and cosmic radiation that future lunar explorers will face, and map out the surface topology, mineralogy, and chemical composition of Earth's nearest neighbor. One year will be spent scouting future landing sites, followed by three years of purely scientific observations.

While LRO was launched directly to the moon by a powerful Atlas 5 rocket, LCROSS and the booster's empty Centaur upper stage were sent into a looping four-month orbit back around the Earth.

The spacecraft was designed to aim itself and the attached Centaur stage back at the moon, targeting a permanently shadowed crater near the south pole. Mission managers initially selected a crater known as Cabeus A, but after additional analysis of topographic data, the target was switched to nearby Cabeus, a crater measuring some 62 miles across and about 2.5 miles deep.

LCROSS successfully separated from the Centaur stage at 9:50 p.m. Thursday and then rotated 180 degrees to aim its instruments forward. A small rocket firing slowed LCROSS to ensure the proper four-minute separation from the Centaur.

Analysis of telemetry indicated the trajectory was right on the money--the Centaur is believed to have hit the surface within about 210 feet of the planned target--and LCROSS presumably flew through an ejecta cloud of some sort.

"Everything really worked out well," Colaprete said earlier. "The spacecraft flew perfectly, the instruments performed, honestly, better than expected in some cases. We got interesting results. But again, these are just initial results...I can certainly report there was an impact, we saw the impact, we saw the crater and we got good measurements, spectroscopic measurements, which is what we needed of the impact event.

"So we have the data we need to actually address the questions we set out to address."

The search for water ice on the moon is one of the holy grails of modern lunar exploration. Data from other spacecraft, including the Lunar Reconnaissance Orbiter, show the presence of hydrogen, possibly from water ice, in the top three feet or so of lunar soil. Scientists initially believed ice from comets could be expected primarily in permanently shadowed craters near the moon's poles, but more recent data indicated the presence of trace amounts over broad regions.

"It could be water, it could be methane, it could be hydrocarbons or organics," Colaprete said during a pre-impact briefing. "From a scientific standpoint, this is incredibly important. Whatever the moon has collected over the last 3.5 billion years in terms of water, organics, materials from comets, asteroids, the sun, could be trapped in these pockets on the moon. It's a time capsule, it's a window into the past of the entire inner solar system, of Earth."

Finding ice on the moon could be critical to future exploration or even colonization. With unlimited solar power, ice can be converted into water, oxygen, and hydrogen rocket fuel. Finding ice on the moon also would raise the possibility of similar deposits in similar environments across the solar system.

"Water in terms of exploration is very important," Colaprete said. "Even if we don't go back to the moon, it is a principle resource throughout the solar system. On Mars and beyond. The old Mars mantra was 'follow the water.' And really, that extends in my mind through the entire solar system and the entire universe. And so really, LRO and LCROSS are the first directed, focused steps in that direction on the moon."

The Soyuz TMA-16 spacecraft carrying cosmonaut Maxim Suraev, NASA flight engineer Jeffrey Williams, and Cirque du Soleil founder Guy Laliberté maneuvered to a smooth docking with the International Space Station early Friday to close out a two-day orbital chase.

With Suraev and Williams closely monitoring the final stages of the automated rendezvous, the small capsule's docking mechanism engaged its counterpart at the aft port of the Zvezda command module at 4:35 a.m. EDT as the two spacecraft sailed high above northeast Kazakhstan. Hooks and latches then engaged to pull the Soyuz firmly into place.

After leak checks, hatches between the two spacecraft were opened at 6:57 a.m., allowing Suraev, Williams and Laliberté, wearing a red clown nose, to float into the space station.

Cirque du Soleil founder Guy Laliberté chats with family members back in Moscow after he boarded the International Space Station.

(Credit: NASA TV)

They were welcomed aboard by outgoing commander Gennady Padalka, NASA flight engineer Michael Barratt, cosmonaut Roman Romanenko, European Space Agency astronaut Frank De Winne, Canadian astronaut Robert Thirsk, and NASA astronaut Nicole Stott.

"It's good to see you all, looking very good," NASA Administrator Charles Bolden called from mission control near Moscow.

"Hello Charlie, yeah, we had a great trip up here and we're happy to be on board, with good company," Williams replied.

"Well Jeff, Max and Guy, just want to let you all know we enjoyed a superb launch" on Wednesday, Bolden said. "Your families behaved well, they laughed all the way back from Baikonur to Moscow. You all should rest well and know they're being taken care of."

Suraev's father then congratulated his son on his first spaceflight, saying "all of us here are very happy that so far the mission is very successful...All the best to you, son, please do a good job there."

Laliberté, once again putting on his clown nose, told his family he was enjoying the trip and feeling "pretty good, actually. I'm adapting pretty good." Then he joked, "But I am staying six months, though."

A Canadian worth an estimated $2.5 billion, Laliberté is believed to have paid the Russians around $35 million to visit the space station as a tourist.

Suraev and Williams are replacing Padalka and Barratt, who plan to return to Earth with Laliberté on October 11. De Winne will take over as European Space Agency first commander in Padalka's place.

"We've had a fabulous time up here, the station is in great shape and really well supplied," Barratt said. "We're just really impressed that everything has worked so far with a couple of shuttles, the (Japanese) HTV (cargo ship), and everything worked on that thing. It was a beautiful spaceship and we're really lucky to have such visitations up here and a lot of firsts. So we're ready to come home, but it's been a great time."

"You guys enjoy all your time together this week," Gerstenmaier said. "Take good care of (the) space station."