Remember those snorkels and pads astronauts used during the ammonia pump replacement on station this past December? The new measures went a long way to helping astronauts stay safe if another helmet water leak happens, but at the same time, NASA is eager to find the cause so they know how it happened and how to prevent it.
Two maintenance spacewalks are planned for Expedition 40, but they’re not necessarily going forward yet. NASA has traced the issue to a fan pump separator, but there’s another issue, explained expedition commander Steve Swanson: where the particulates in the water came from. Perhaps they were from a filter, or perhaps from the water system itself. So NASA is reserving spacewalks on a need-only basis until more is known.
“That was the problem. Now, we’ve got to find out where that came from,” Swanson said in a phone interview with Universe Today from Houston to preview Expedition 39/40’s mission, which launches in late March. Joining the two-time shuttle astronaut will be two other people, including Alexander Skvortsov. The Russian cosmonaut commanded Expedition 24 in 2010, which experienced a similar ammonia leak to the one that was just repaired a few months ago.
While leaks and spacewalks are the items that grab headlines when it comes to spaceflight, one of the major goals of the International Space Station is more subtle. Researchers hope to understand how spaceflight affects the human body during long-duration missions. (This will be a major focus of a one-year mission to station in 2015.) Through a translator, Skvortsov explained that the recent decision to extend station’s operations to at least 2024 will be a help for research of this kind.
“It is great that they have expanded the station until 2024 at least, and it will be very beneficial to the science programs and projects we have on board,” he said in Russian. “I hope that it will be extended even further. It will depend on the condition of the station.”
Expedition 39 is expected to launch March 26, 2014 from the Baikonour Cosmodrome in Kazakhstan. The crew will join orbiting spacefarers Koichi Wakata (who will command Expedition 39, a first for Japan), Rick Mastracchio (who participated in the ammonia pump swap-out) and Mikhail Tyurin.
Engineers prepare Orion’s service module for installation of the fairings that will protect it during launch this fall when Orion launches on its first mission. The service module, along with its fairings, is now complete. Credit: NASA
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2014 is the Year of Orion.
Orion is NASA’s next human spaceflight vehicle destined for astronaut voyages beyond Earth and will launch for the first time later this year on its inaugural test flight from Cape Canaveral, Florida.
The space agency is rapidly pressing forward with efforts to finish building the Orion crew module slated for lift off this Fall on the unmanned Exploration Flight Test – 1 (EFT-1) mission.
The Orion module stack is comprised of three main elements – the Launch Abort System (LAS) on top, the crew module (CM) in the middle and the service module (SM) on the bottom.
With the completion of the service module, two thirds of the Orion EFT-1 mission stack are now compete.
LAS assembly was finalized in December.
The crew module is in the final stages of construction and completion is due by early spring.
Orion is being manufactured at NASA’s Kennedy Space Center (KSC) inside a specially renovated high bay in the Operations and Checkout Building (O&C).
“We are making steady progress towards the launch in the fall,” said NASA Administrator Charles Bolden at a media briefing back dropped by the Orion service module inside the O&C facility.
“It’s very exciting because it signals we are almost there getting back to deep space and going much more distant than where we are operating in low Earth orbit at the ISS.”
“And I’m very excited for the young people who will have an opportunity to fly Orion,” Bolden told me in the O&C.
Lockheed Martin is the prime contractor for Orion under terms of a contract from NASA.
Orion is NASA’s first spaceship designed to carry human crews on long duration flights to deep space destinations beyond low Earth orbit, such as asteroids, the Moon, Mars and beyond.
The inaugural flight of Orion on the unmanned Exploration Flight Test – 1 (EFT-1) mission is on schedule to blast off from the Florida Space Coast in mid September 2014 atop a Delta 4 Heavy booster, Scott Wilson, NASA’s Orion Manager of Production Operations at KSC, told Universe Today during a recent interview at KSC.
Orion is currently under development as NASA’s next generation human rated vehicle to replace the now retired space shuttle.
Concurrently, NASA’s commercial crew initiative is fostering the development of commercial space taxi’s to ferry US astronauts to low Earth orbit and the International Space Station (ISS).
Get the details in my interview with SpaceX CEO Elon Musk about his firm’s Dragon ‘space taxi’ launching aboard the SpaceX upgraded Falcon 9 booster – here.
The two-orbit, four- hour EFT-1 flight will lift the Orion spacecraft and its attached second stage to an orbital altitude of 3,600 miles, about 15 times higher than the International Space Station (ISS) – and farther than any human spacecraft has journeyed in 40 years.
The crew module rests atop the service module, similar to the Apollo Moon landing program architecture.
The SM provides in-space power, propulsion capability, attitude control, thermal control, water and air for the astronauts.
For the EFT-1 flight, the SM is not fully outfitted. It is a structural representation simulating the exact size and mass.
In a significant difference from Apollo, Orion is equipped with a trio of massive fairings that encase the SM and support half the weight of the crew module and the launch abort system during launch and ascent. The purpose is to improve performance by saving weight from the service module, thus maximizing the vehicles size and capability in space.
All three fairings are jettisoned at an altitude of 100 miles up when they are no longer need to support the stack.
On the next Orion flight in 2017, the service module will be manufactured built by the European Space Agency (ESA).
“When we go to deep space we are not going alone. It will be a true international effort including the European Space Agency to build the service module,” said Bolden.
The new SM will be based on components from ESA’s Automated Transfer Vehicle (ATV) which is an unmanned resupply spacecraft used to deliver cargo to the ISS.
A key upcoming activity for the CM is installation of the thermal protection system, including the heat shield.
The heat shield is the largest one ever built. It arrived at KSC last month loaded inside NASA’s Super Guppy aircraft while I observed. Read my story – here.
The 2014 EFT-1 test flight was only enabled by the extremely busy and productive year of work in 2013 by the Orion EFT-1 team.
“There were many significant Orion assembly events ongoing on 2013” said Larry Price, Orion deputy program manager at Lockheed Martin, in an interview with Universe Today at Lockheed Martin Space Systems in Denver.
“This includes the heat shield construction and attachment, power on, installing the plumbing for the environmental and reaction control system, completely outfitting the crew module, attached the tiles and building the service module which finally leads to mating the crew and service modules (CM & SM) in early 2014,” Price told me.
Orion was originally planned to send American astronauts back to Moon – until Project Constellation was cancelled by the Obama Administration.
Now with Orion moving forward and China’s Yutu rover trundling spectacularly across the Moon, one question is which country will next land humans on the Moon – America or China?
Read my story about China’s manned Moon landing plans – here.
Stay tuned here for Ken’s continuing Orion, Chang’e-3, Orbital Sciences, SpaceX, commercial space, LADEE, Mars and more news.
1st 360 Degree Color Panorama from China’s Chang’e-3 Lunar Lander
Portion of 1st color panorama from Chang’e-3 lander focuses on the ‘Yutu’ lunar rover and the impressive tracks it left behind after initially rolling all six wheels onto the pockmarked and gray lunar terrain on Dec. 15, 2013. Mosaic Credit: CNSA/Chinanews/Ken Kremer/Marco Di Lorenzo
See below – the complete panoramic version as well as a 360 degree interactive version
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Chinese space officials have at last released much higher quality versions of the 1st color imagery captured by China’s first spacecraft to soft land on the surface of the Earth’s Moon; Chang’e-3.
For the enjoyment of space enthusiasts worldwide, we have assembled the newly released imagery to create the ‘1st 360 Degree Color Panorama from China’s Chang’e-3 Lunar Lander.’ See above and below two versions in full resolution, as well as an interactive version – showing the fabulous view on the 1st Lunar Day.
The moonscape panorama shows the magnificent desolation of the pockmarked gray lunar plains at the mission’s touchdown site at Mare Imbrium. It is starkly reminiscent of NASA’s manned Apollo lunar landing missions which took place over 4 decades ago – from 1969 to 1972.
And this spectacular view may well be a harbinger of what’s coming next – as China’s leaders consider a manned lunar landing perhaps a decade hence, details here.
See above a cropped portion – focusing on the piggybacked ‘Yutu’ lunar rover and the impressive tracks it left behind after it initially rolled all six wheels onto the surface; and which cut several centimeters deep into the loose lunar regolith on Dec. 15, 2013.
The beautiful imagery snapped by China’s history making Chang’e-3 lunar lander on 17 and 18 December 2013 – during its 1st Lunar day – was released in six separate pieces on the Chinese language version of the Chinanews website, over the weekend.
See below the compete version of the 360 degree panorama stitched together by the imaging team of scientists Ken Kremer and Marco Di Lorenzo.
We have also enhanced the imagery to improve contrast, lighting and uniformity to visibly reveal further details.
For comparison, below is the initial black and white panoramic version seen by the landers navigation camera – which we assembled from screenshots taken as it was twirling about in a CCTV news video report.
Alas, one bit of sad news is that it appears the 1200 kg lander’s color camera apparently did not survive the 1st frigid night since it reportedly wasn’t protected by a heater.
For a collection of new and higher quality Chang’e-3 mission photos – including the 1st portraits of the Earth taken from the Moon’s surface in some 40 years – please check my recent article; here.
Check this link – to view a 360 degree interactive version of the first Chang’e-3 color panorama – created by space enthusiast Andrew Bodrov. He has added in a separate image of the Earth snapped by the lander.
China’s action to release higher quality imagery is long overdue and something I have urged the Chinese government to do on several occasions here so that everyone can marvel at the magnitude of China’s momentous space feat.
We applaud the China National Space Administration (CNSA) for this new release and hope they will publish the higher resolution digital versions of all the imagery taken by the Chang’e-3 mothership and the Yutu rover and place everything onto a dedicated mission website – just as NASA does.
Here’s the pair of polar views of the 360 degree lunar landing site panoramas (released last week) – taken by each spacecraft and showing portraits of each other.
China’s history making moon robots – the Chang’e-3 lander and Yutu rover – are now working during their 2nd Lunar Day. They have resumed full operation – marking a major milestone in the new mission.
It’s remarkable to consider that although they were just awoken last weekend on Jan. 11 and Jan. 12 from the forced slumber of survival during their long frigid 1st lunar night, they are now already half way through Lunar Day 2 – since each day and night period on the Moon lasts two weeks.
China is only the 3rd country in the world to successfully soft land a spacecraft on Earth’s nearest neighbor after the United States and the Soviet Union.
Meanwhile as China’s Yutu rover trundles across pitted moonscapes, NASA’s Opportunity rover is in the midst of Martian mountaineering at the start of Decade 2 on the Red Planet and younger sister Curiosity is speeding towards the sedimentary layers of Mount Sharp.
Stay tuned here for Ken’s continuing Chang’e-3, Orbital Sciences, SpaceX, commercial space, LADEE, Mars and more news.
The International Space Station could potentially function far beyond its new extension to 2024. Perhaps out to 2050. The ISS as seen from the crew of STS-119. Credit: NASA
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WALLOPS ISLAND, VA – Just days ago, the Obama Administration approved NASA’s request to extend the lifetime of the International Space Station (ISS) to at least 2024. Ultimately this will serve as a stepping stone to exciting deep space voyages in future decades.
“I think this is a tremendous announcement for us here in the space station world,” said Bill Gerstenmaier, associate administrator for NASA’s Human Exploration and Operations Mission Directorate, at a press briefing on Jan. 8.
But there’s really “no reason to stop it there”, said Frank Culbertson, VP at Orbital Sciences and former NASA astronaut and shuttle commander, to Universe Today when I asked him for his response to NASA’s station extension announcement.
“In my opinion, if it were up to me, we would fly it [the station] to 2050!” Culbertson added with a smile. “Of course, Congress would have to agree to that.”
Gerstenmaier emphasized that the extension will allow both the research and business communities to plan for the longer term and future utilization, be innovative and realize a much greater return on their investments in scientific research and capital outlays.
“The station is really our stepping stone,” Robert Lightfoot, NASA Associate Administrator, told me at Wallops following Antares launch.
The Alpha Magnetic Spectrometer (AMS) – which is searching for elusive dark matter – was one of the key science experiments that Gerstenmaier cited as benefitting greatly from the ISS extension to 2024. The AMS is the largest research instrument on the ISS.
The extension will enable NASA, the academic community and commercial industry to plan much farther in the future and consider ideas not even possible if the station was de-orbited in 2020 according to the existing timetable.
Both the Antares rocket and Cygnus cargo freighter are private space vehicles developed and built by Orbital Sciences with seed money from NASA in a public-private partnership to keep the station stocked with essential supplies and research experiments and to foster commercial spaceflight.
So I asked Culbertson and Lightfoot to elaborate on the benefits of the ISS extension to NASA, scientific researchers and commercial company’s like Orbital Sciences.
“First I think it’s fantastic that the Administration has committed to extending the station, said Culbertson. “They have to work with the ISS partners and there is a lot to be done yet. It’s a move in the right direction.”
“There is really no reason to stop operations on the space station until it is completely no longer usable. And I think it will be usable for a very long time because it is very built and very well maintained.”
“If it were up to me, we would fly it to 2050!”
“NASA and the engineers understand the station very well. I think they are operating it superbly.”
“The best thing about the station is it’s now a research center. And it is really starting to ramp up. It’s not there yet. But it is now finished [the assembly] as a station and a laboratory.”
“The research capability is just starting to move in the right direction.”
The Cygnus Orbital 1 cargo vehicle launched on Jan. 9 was loaded with approximately 2,780 pounds/1,261 kilograms of cargo for the ISS crew for NASA including vital science experiments, computer supplies, spacewalk tools, food, water, clothing and experimental hardware.
The research investigations alone accounted for over 1/3 of the total cargo mass. It included a batch of 23 student designed experiments representing over 8700 students sponsored by the National Center for Earth and Space Science Education (NCESSE).
“So extending it [ISS] gives not only commercial companies but also researchers the idea that ‘Yes I can do long term research on the station because it will be there for another 10 years. And I can get some significant data.”
“I think that’s really important for them [the researchers] to understand, that it will be backed for that long time and that they won’t be cut off short in the middle of preparing an experiment or flying it.”
“So I think that first of all it demonstrates the commitment of the government to continue with NASA. But also it presents a number of opportunities for a number of people.”
What does the ISS extension mean for Orbital?
The purpose for NASA and Orbital Sciences in building Antares and Cygnus was to restore America’s ability to launch cargo to the ISS – following the shutdown of NASA’s space shuttles – by using commercial companies and their business know how to thereby significantly reduce the cost of launching cargo to low Earth orbit.
“As far as what it [the ISS extension] means for Orbital and other commercial companies – Yes, it does allow us to plan long term for what we might be able to do in providing a service for NASA in the future,” Culbertson replied.
“It also gives us the chance to be innovative and maybe invest in some improvements in how we can do this [cargo service] – to make it more cost effective, more efficient, turnaround time quicker, go more often, go a lot more often!”
“So it allows us the chance to think long term and make sure we can get a return on our investment.”
What does the ISS extension mean for NASA?
“The station is really our stepping stone,” Robert Lightfoot, NASA Associate Administrator, told Universe Today. “If you use that analogy of stepping stones and the next stone. We need to use this stone to know what the next stone looks like. So we can get ready. Whether that’s research or whether that things about the human body. You don’t want to jump off that platform before you are ready.”
“We are learning every day how to live and operate in space. Fortunately on the ISS we are close to home. So if something comes up we can get [the astronauts] home.”
The ISS extension is also the pathway to future exciting journey’s beyond Earth and into deep space, Culbertson and Lightfoot told Universe Today.
“It actually also presents a business opportunity that can be expanded not just to the station but to other uses in spaceflight, such as exploration to Asteroids, Mars and wherever we are going,” said Culbertson.
And we hope it will extend to other civilian uses in space also. Maybe other stations in space will follow this one and we’ll be able to participate in that.”
Lightfoot described the benefits for astronaut crews.
“The further out we go, the more we need to know about how to operate in space, what kind of protection we need, what kind of research we need for the astronauts,” said Lightfoot.
“Orbital is putting systems up there that allow us to test more and more. Get more time. Because when we get further away, we can’t get home as quick. So those are the kinds of things we can do.
“So with this extension I can make those investments as an Agency. And not just us, but also our academic research partners, our industry partners, and the launch market too is part of this.”
He emphasized the benefits for students, like those who flew experiments on Cygnus, and how that would inspire the next generation of explorers!
“You saw the excitement we had today with the students at the viewing area. For example with those little cubesats, 4 inches by 4 inches, that they worked on, and got launched today!”
“That’s pretty cool! And that’s exactly what we need to be doing!
“So eventually they can take our jobs. And as long as they know that station will be there for awhile, the extension gives them the chance to get the training and learning and do the research we need to take people further out in space.”
“The station is the stepping stone.”
“And it really is important to have this station extension,” Lightfoot explained to me.
The Jan. 9 launch of the Orbital-1 mission is the first of eight operational Antares/Cygnus flights to the space station scheduled through 2016 by Orbital Sciences under its $1.9 Billion Commercial Resupply Services (CRS) contract with NASA to deliver 20,000 kg of cargo to orbit.
Orbital Sciences and SpaceX – NASA’s other cargo provider – will compete for follow on ISS cargo delivery contracts.
The next Antares/Cygnus flight is slated for about May 1 from NASA Wallops.
In an upcoming story, I’ll describe Orbital Sciences’ plans to upgrade both Antares and Cygnus to meet the challenges of the ISS today and tomorrow.
Stay tuned here for Ken’s continuing Orbital Sciences, SpaceX, commercial space, Chang’e-3, LADEE, Mars and more news.
Customers eager to watch live, high-definition images of Earth may have to wait a bit longer. Two Russian spacewalkers were unable to get two UrtheCast cameras to function despite spending eight hours and seven minutes outside yesterday (Dec. 27) — the longest spacewalk in Russian history.
The cause of the problem is not known. Oleg Kotov and Sergey Ryazanskiy followed all the steps as instructed, but controllers did not see telemetry or data flowing from the cameras as expected. The spacewalkers tried unplugging and replugging cables and other steps to fix the problem, but were eventually told to take some pictures of the equipment and then bring the cameras back inside for more analysis.
“So it appears we have seen an unsuccessful attempt at bringing those two cameras to life,”said Rob Navias, NASA’s Mission Control commentator, in live remarks published on CBS.
“The exact cause of the problem is not known at this point. The Russian flight control team will spend some time, obviously, analyzing the data and trying to understand from the analysis of these photographs whether or not the problem lies in the electrical connectors themselves or in the cameras, which of course would be a more significant issue.”
In remarks on Twitter, UrtheCast said it was preparing an official statement to release. ” ‘Tis the nature of space tech,” the British Columbia-based company said in response to a comment talking about the challenges of doing high-tech work in space. The company also made a comment to Reuters saying there was a problem with camera connectivity.
UrtheCast plans to use the two cameras to broadcast live views of the Earth to paying customers (particularly government and private agencies), while also serving as an educational platform for young students. The company is working directly with Russian aerospace giant RSC Energia and has no agreement with NASA for the work, according to this past Universe Today report.
The longest spacewalk in history took place on March 11, 2001 and took eight hours, 56 minutes. NASA astronauts Jim Voss and Susan Helms were doing work on the International Space Station during the record-setting jaunt.
This was the third spacewalk in a week on station. The other two were performed by Rick Mastracchio and Mike Hopkins, who replaced an ammonia pump needed to keep one of the station’s two cooling loops functioning. Experiments are gradually coming back online, NASA said, after the equipment spent two weeks in a forced shutdown.
For all you Earth observation geeks out there, we have some good news — two Russian astronauts are going to install a camera on Friday (Dec. 27) that will beam live images of Earth back to your browser.
The UrtheCast camera is the headline task for Expedition 38 astronauts Oleg Kotov and Sergey Ryazanskiy to perform, on top of installing a foot restraint and doing some equipment swapouts. This spacewalk, by the way, is not related in any way to the two successful contingency ones earlier this week to replace a faulty pump on station.
The spacewalk is supposed to start at 8 a.m. EST (1 p.m. UTC) and will be carried live on NASA Television, which you can view in the media player above or at this alternate link. The spacewalk is scheduled for seven hours, but could be longer or shorter as events arise.
“Imagine you have a nearly live Google Earth, but it isn’t four-year-old data – you have data that is being refreshed all the time, with videos coming down over interesting areas where interesting events are going on, showing you what is changing, what is going on,” said George Tyc, the chief technology officer at UrtheCast, in an interview with Universe Today earlier this year.
“What we really hope to pull off is to change the paradigm, get the everyday person interacting and seeing the data coming down from space to see the Earth and how it is evolving over time in a way that isn’t available right now.”
It’s been a busy week for spacewalkers on station as Rick Mastracchio and Mike Hopkins successfully replaced a pump that shut down two weeks ago and crippled one of the station’s two cooling loops for regulating the temperature of systems on station. With that work completed Tuesday (Dec. 24), a NASA update today (Dec. 26) said systems are slowly coming back online.
“Early on Christmas Day, the heat exchangers for the Destiny laboratory, the Harmony and Tranquility nodes and the Japanese Kibo laboratory were reintegrated to enable experiments racks and other systems affected by the partial Cooling Loop A shutdown Dec. 11 to come back on line,” NASA stated.
“The Columbus laboratory heat exchanger will remain down until the European Space Agency, at its own request, conducts that module’s integration next week when personnel return from the holiday.”
Two astronauts are oh-so-close to fixing the International Space Station cooling system that shut down Dec. 11. NASA astronauts Mike Hopkins and Rick Mastracchio will head “outside” on a spacewalk around 7:10 a.m. EST (12:10 p.m. UTC) to replace a faulty pump that led to the problem.
The spacewalkers were so quick on their first outing (on Saturday, Dec. 21) that they accomplished many of the tasks planned for their second spacewalk. They unhooked the first pump module and stowed it safely, then elected to wait until their second to retrieve the replacement pump, swap it in and turn it on.
Below the jump, here are some things to watch for — including why Hopkins is getting a ride on the Canadarm2 robotic arm this time instead of Mastracchio.
The suits. NASA has new safety procedures and measures in place to protect against helmet water leaks, and everything worked perfectly the first time. In an unrelated incident, while the astronauts were in the airlock, an inadvertent switch-throw introduced some water into Mastracchio’s sublimator. The suit is airing out and Mastracchio is wearing a backup suit. While sublimators need water to function, this water could have ended up in the wrong spot. If he had used the one with the water in it, it could have frozen during the second spacewalk and caused problems, Judd Frieling, the Expedition 38 lead flight director, explained on NASA TV Monday.
The background personnel. While it’s easy to shine the spotlight on the two guys outside, also remember that Japanese astronaut Koichi Wakata will be piloting the robotic arm under direction from CapCom and fellow Japanese astronaut Aki Hoshide. Giving advice to the spacewalkers will be CapCom and NASA astronaut Doug Wheelock, who did a similar repair on the International Space Station in 2010. As Wheelock told Universe Today, there are literally hundreds (likely, thousands) of people working the procedures to get this done.
The timeline. NASA really, really wants to wrap this repair up soon, and it’s not because of the holidays. Dec. 27 marks a planned spacewalk for the Russian side of the station that is totally unrelated to what is going on right now. The Americans are hoping they won’t disrupt the schedule so that the Russians can proceed with their experiment swapouts and foot restraint installation as originally planned.
The robotic arm. Hopkins is a much more junior spacewalker than the experienced Mastracchio, who has seven spacewalks underneath his belt before today. Hopkins, who is on his first spaceflight, is in a situation where he can expect more flights in the future. So any training he can get in orbit would be fantastic as he would be a stronger asset on future missions. So, Mastracchio was supposed to ride the Canadarm2 on the second spacewalk, but at that time NASA anticipated it would take three to do the repair. Since the crew finished the work so swiftly, it’s likely only two will be needed. As such, giving Hopkins the slot would be the best practice, NASA and the crew determined.
The future pump move. NASA decided not to move the faulty pump from its temporary stowage location until later. Due to thermal conditions on station, it can stay in its temporary spot until June. This saves the spacewalkers extra work now, but someone will need to head outside by summer to move it to a more permanent location.
Kids’ drawings are the best, as astronaut Karen Nyberg proudly shows in her latest mini-quilt piece. The astronaut — who just spent six months in orbit during Expedition 36/37 — is also a prolific quilter and drew inspiration from her son, three-year-old Jack, in this quilt posted on Pinterest. The drawing shows how quickly Jack changed during her mission, she wrote.
“When I left for space station in May, my son was drawing only lines, circles, and squiggles. When I returned in November, he was drawing people. He told me this picture is ‘Jack playing in the grass on a sunny day.’ ”
We’re guessing Nyberg is having an easier time quilting now that she isn’t working in microgravity anymore. The video below explains the challenges she had doing quilting in orbit and making sure that sharp pins didn’t just float away and cause problems on station.
Nyberg is married to astronaut Doug Hurley (who piloted the final shuttle mission, among other things) and as the Houston Chronicle’s Eric Berger points out in November, the parents have lots of experience helping each other out with child care during training and missions.
The ghosts of spacewalks past did not haunt the quick-working pair of astronauts who began replacing a faulty ammonia pump on the International Space Station today (Dec. 21).
Unlike a difficult spacewalk to do a similar repair in 2010, NASA astronauts Rick Mastracchio and Mike Hopkins were so far ahead of schedule that they began doing tasks scheduled for the second in their expected trio of spacewalks.
In better news yet for the spacewalkers, a water leak in Hopkins’ spacesuit this past July — one that sent astronauts scrambling back to the airlock for safety — did not happen again, showing that the part replacement NASA directed had worked. An unrelated water issue in Mastracchio’s suit, however, made agency officials decide to delay the next spacewalk one day to Dec. 24.
The pump replacement is needed to put the space station at full fighting weight. Since Dec. 11, science experiments and other non-critical systems have been offline since a valve in the pump broke. While the astronauts are in no immediate danger, one of their two cooling loops is shut down and there is not a big margin of safety if the other loop fails.
Since this is NASA’s first spacewalk since the leaky suit was last used, the agency emphasized two new measures it has to protect the astronauts if another leak occurs. The first is a new helmet absorption pad (HAP) to soak up any water in the helmet. The second is a pipe — a snorkel — that would let astronauts breathe air from another part of the suit, if required.
But with every “HAP check” that CapCom and astronaut Doug Wheelock called up to the astronauts today, they reported that the suits were dry and everything was fine. The new water issue happened after the spacewalk, while the astronauts were repressurizing the airlock. In a statement, NASA said water could have entered Mastracchio’s suit sublimator and decided to switch him to a backup suit as a precaution.
The spacewalk tasks themselves, however, went far more swiftly than problems Wheelock experienced in 2010, such as when an ammonia line on the pump refused to unhook as required and caused a lengthy delay. NASA made some changes (such as lowering the pressure on the lines, as Wheelock told Universe Today), and this time, Mastracchio powered through the line and electrical removals. The astronauts quickly moved 1.5 hours of schedule and then beyond. A few stray ammonia flakes hit Mastracchio’s suit, but not enough to cause concerns about contamination since the traces of substance baked off in the sun as he worked.
“I don’t know if you believe in miracles, but I got it on the first try,” Mastracchio radioed early in the spacewalk as he got a tricky part of a Canadian robotic arm foot restraint threaded. Mastracchio rode the arm for much of the spacewalk while Hopkins was the “free floating” colleague hovering and doing other tasks nearby.
The most spectacular television shots occurred towards the end of the five-hour, 28-minute spacewalk when Mastracchio carefully wrestled the 800-pound ammonia pump module out of its spot on the space station while riding aboard Canadarm2. (Controlling the arm was Japanese astronaut Koichi Wakata, guided by CapCom and fellow Japanese astronaut Aki Hoshide on the ground.)
After he stowed the module, Mission Control gave the astronauts the go-ahead to put in the spare. Mastracchio, however, said he felt it was best for the astronauts to leave it for next time. While the pair have three spacewalks (including today’s) slated to finish the task, it’s possible they could wrap it up in two — but only if things go as smoothly as this time.
The next spacewalk will take place Dec. 24 at 7:10 a.m. EST (12:10 p.m. UTC), and will be available on NASA Television. We’ll keep you up to speed as the next spacewalk occurs. Today’s excursion was Mastracchio’s seventh and Hopkins’ first.
Just how human-sounding is Kirobo, the first talking robot on the station? This amusing conversation, recorded on the International Space Station and broadcast on a Toyota YouTube channel, shows a pint-sized robot that not only responds to questions, but also gestures and moves around in a scary person-like way.
As Kirobo chats with Japanese astronaut Koichi Wakata — who is excellent at deadpan, by the way — the two discussed matters such as how the Earth looks from space, the Japanese robotic arm Kibo and — right at the end — the most important difference between Kirobo and his backup, Mirata.
We don’t want to spoil the joy of the conversation for you by repeating what Kirobo says, but let’s just say there’s something special about watching a Japanese space robot make a reference to the first landing on the moon, which was hailed as a huge technological achievement when it happened in 1969.
The 13.4-inch (0.34 meter) Kirobo is sponsored by Toyota and the University of Tokyo and is supposed to be able to pick up on the facial expressions of crewmates. The robot will be working closely with Wakata during Expedition 38 and then Expedition 39, when Wakata assumes command of station.
One goal is to see how well humans and semi-autonomous robots can work together in space. To see Kirobo’s first words from station, check out our past story from September.