I Heart the ISS: Ten Reasons to Love the International Space Station

The International Space Station. Image Credit: NASA

It’s been called a white elephant, an orbital turkey, a money pit, and an expensive erector set. Seemingly, there’s even people at NASA who think building it was a mistake. The International Space Station has been plagued with repeated delays, cost overruns, and bad press. Additionally, the ISS has never really caught the fancy of the general public and most likely there’s a fair percentage of the world’s population who have absolutely no idea there’s a construction project the size of two football fields going on in orbit over their heads.

But I’m going to be honest. I’ll come right out and say it: I really like the ISS. In fact, I’m crazy about it, and have been ever since Unity docked with Zarya back in 1998. Yes, my heart belongs to the space station, and since its Valentine’s Day, I’m going to profess my feelings here and now with ten reasons why I love the International Space Station:
(In no particular order:)

1. International Cooperation. Didn’t your heart swell with pride for the Europeans when the Columbus science module finally became part of the station this week? And you gotta love the Canadians for their reliable, heavy-duty Canadarm 2. The Russians have been steady partners in station construction and re-supply for years now. Japan’s science lab will be added on the next shuttle mission.

The ISS is the largest, most complex, international engineering project in history. In a world where violence and political animosity floods the daily news, it’s incredible that this structure is quietly being built by 16 different countries working together in relative harmony. If not for the international partners, the ISS probably wouldn’t have gotten off the ground. NASA Administrator Mike Griffin has said that the station’s most enduring legacy is the international partnership that created it.

2. Actually Building an Outpost in Space. The dream of almost every post-Apollo space enthusiast is to have a settlement or colony in space. As humble as it is, the ISS is exactly that. Humans have been living on board the station for over 7 years now. The experience of constructing and living aboard this complex structure in space is invaluable, and any future outpost will benefit from what’s been learned with the ISS.

ISS Crew & STS-120 Crew.  Image Credit:  NASA

3. The Personalities. Peggy Whitson, the first female station commander. Clay Anderson’s unique sense of humor. Suni Williams’ marathon and haircut for cancer patients. Mike Lopez-Alegria’s music. Mikhail Tyurin’s golf shot. Yuri Malenchenko’s wedding. Frank Culbertson’s September 11 perspective. Yury Usachev’s spinning antics. It goes all the way back to the three-way fist pump on Expedition One between Bill Shepherd, Sergei Krikalev, and Yuri Gidzenko. With the Expeditions lasting 4-8 months, we have the opportunity to get to know the astronauts and cosmonauts that live and work on board the ISS. If you watch the daily feeds from the ISS or listen to the periodic press conferences, you can become familiar with the different personalities of the station crews. The number one personality has to be Don Petit and his Saturday Morning Science.

4. You can see it almost every night. I’ve witnessed jaws dropping and eyes widening in wonder when people see the ISS for the first time gliding silently and swiftly across the night or early morning sky. I never tire of observing it. Find out when the station will fly over your backyard at NASA’s website or at the Heaven’s Above website.

5. No major problems so far. One of the real impressive things about the ISS is that all the components, built by different countries and contractors have fit together perfectly. Yes, there have been intermittent computer issues, a faulty smoke alarm and the torn solar arrays. But these problems have all been resolved in short order. The damaged SARJ (Solar Alpha Rotary Joint) is a looming issue that could be problematic. But there are some first-rate engineering minds working on this matter, and it appears they have time to come up with a solution. The station has never had a major calamity or had to be evacuated in over 7 years of continuous human occupation. Knock on a Whipple Shield.

6. The general public can participate. Schools and informal education centers can conduct live question and answer sessions with space station crews. Middle school students can choose locations on Earth for the ISS crew to take pictures as part of the EarthKAM project. Ham radio operators can talk regularly with astronauts and cosmonauts with the ARISS (Amateur Radio on the ISS.) College students can design projects to be researched on board the station. And of course if you have $40 million in spare change you can ride to the ISS on a Soyuz as a spaceflight participant.

7. Finally, we have science officers. The other dream of every post-Apollo space enthusiast (and Star Trek fans) is to have science officers to conduct real scientific research. The ISS has had science officers since 2002, but science hasn’t been in the forefront of the work on board the ISS. Yet.

8. Long term research. The ability of the ISS to serve as a platform for science has come under fire. But what other lab has been expected to produce scientific results while still under construction? With the addition of the European and Japanese science labs, and the expected increase in crew size from three to six in 2009, scientific research, the original purpose of the station, will finally be able to be conducted with consistency. The microgravity environment of the ISS allows the study of long-term effects of weightlessness on the human body, crucial for any future human exploration on the moon and Mars. Research will help fight diseases such as diabetes, cancer, osteoporosis, and AIDS. The station provides a unique place to test technologies such as life support systems and new manufacturing processes, and gives us a long-term platform to observe and understand Earth’s environment and the universe.

9. Post docking fly-arounds. After each construction mission to the ISS, the shuttle’s post docking fly-around gives us a chance to see the new additions and latest configuration of the station. The astronauts say it’s a thrill to see how their handiwork on a specific mission fits into the big picture of the entire ISS, and it’s a thrill for us back on Earth to see the station’s new look, too. Plus the fly-around usually gives the shuttle pilot some actual stick time to fly the shuttle and a little time in the limelight.

10. What else would we be doing? Some people feel that the ISS’s tremendous budget has taken funds away from robotic exploration and other science. I can’t argue with that. But when it comes to human spaceflight, what else would we have been doing for the past 10-20 years? A space station was the logical next step after the shuttle. The main problem is that it took so long to decide on a plan, get it approved by Congress and get it in the works with international cooperation. But now, with construction and maintenance ongoing, we’re constantly and continually learning how to live and work in space. The ISS is a resource that will guide us on our future human endeavors in space. It’s more than just an obligation to finish and then be disregarded. The planning and funding for its future should encompass the maximum utilization of its fullest potential.

In my eyes, the International Space Station is a thing of beauty, a work of art, an engineering marvel, and a constant companion that I watch for every night as it orbits our planet. The ISS should be given all the respect — and love — it deserves.

Columbus Module Attached to ISS after Eight Hour Spacewalk

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The ESA Columbus module is now attached to the Harmony module on the International Space Station after a successful spacewalk by Space Shuttle Atlantis crew members Stan Love and Rex Walheim. Although Columbus installation was postponed for a day, today’s (Monday) spacewalk was completed in 7-hours and 58-minutes, concluding at 5:11pm EST.

The European Columbus space laboratory has been successfully attached to the Harmony module on the International Space Station. Although the mission took longer than expected, almost eight hours, the spacewalk appears to be a resounding success. Sunday’s planned effort to unpack and attach the module had to be postponed due to an undisclosed medical problem with German astronaut Hans Schlegel. Americans Stan Love and Rex Walheim took over today, probably much to the frustration of Schlegel who had to watch events from inside the station. The medical problem is said not to be serious.

Walheim: “Welcome to spacewalking, buddy.”
Love: “It’s awesome.”
– Communication between the two astronauts as Stan Love embarked on his first ever EVA on Monday.

It’s not all bad news for Schlegel, he is expected to assist in a spacewalk on Wednesday to continue the installation.

An animation still of the Columbus being unpacked from the shuttle (Credit: BBC)
In today’s successful docking of Columbus, the first task was to prepare the Power Data Grapple Fixture on the module so the ISS could capture it with its robotic arm. The arm was operated today by astronaut Leland Melvin, former wide receiver in the US National Football League, and the 12.8 ton module steered to its new home as an extension of the space station. In addition to this, the astronauts prepared for the removal of the Nitrogen Tank Assembly (NTA), a component in the station’s thermal control system. The next spacewalk on Wednesday will install a new assembly after removing the old one. This task had to be carried out as the existing NTA was running low of nitrogen.

Source: BBC

Video of Space Shuttle Atlantis (STS-122) Pitch Maneuver Prior to ISS Docking

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In a superb video released by NASA, the Space Shuttle Atlantis’ 360 degree pitch maneuver is captured prior to docking with the International Space Station (ISS) on Saturday. Atlantis’ mission to the station is to deliver and install the European Space Agency’s (ESA) Columbus science laboratory to the station tomorrow (Monday) despite the first spacewalk being postponed due to an undisclosed medical problem with one of the STS-122 astronauts, Hans Schlegel.

The Russian-built Zvezda module where the recent shuttle pitch maneuver was filmed from (Credit: NASA)
It is always amazing to witness the Space Shuttle in Earth orbit, especially when carrying out docking maneuvers or maintenance tasks. With the help of the crew on-board the ISS in the Russian Zvezda service module (pictured), Space Shuttle Atlantis’ rendezvous pitch maneuver (RPM) is videoed before the shuttle began its final approach to the station yesterday (Saturday). The maneuver, where Atlantis performs a “backflip” at a rate of three quarters of a degree per second, exposes the shuttle’s heat shielding on its underside. The ISS crew could then take a series of high-definition photographs to see if there was any damage to the protective layer.

A small protrusion to Shuttle Atlantis thermal blanket (Credit: NASA)
A small protrusion of Atlantis’ thermal blanket was discovered on Friday (8th Feb.) during a standard arm checkout and payload bay survey (pictured), but it is not believed to be a problem after the more detailed survey from the RPM.

Space Shuttle Atlantis finally made it into space after a series of delays. It was launched on Thursday (7th Feb.), and you can see the launch in another NASA video (from lift-off to booster rocket separation). Always exciting to watch…

The new Columbus module will be prepared for installation at 9:35am on Monday by Mission Specialists Rex Walheim and Stanley Love during a space walk. Their first task will be the installation of the Power Data Grapple Fixture on the new module, allowing the ISS robotic arm to grab the laboratory and position it at the station’s Harmony module. We will be watching the events as they unfold…

Sources: BBC, NASA

Medical Problem Delays Spacewalk

A medical issue with a member of the space shuttle crew has forced a change in personnel for the first scheduled spacewalk of the STS-122 shuttle mission to the International Space Station. The switch has also mandated that the spacewalk be delayed one day to Monday. NASA officials would not say which astronaut was experiencing any medical problems, but did confirm that Stan Love has replaced Hans Schlegel for the initial spacewalk.

“There was a medical issue with the crew,” said John Shannon, deputy shuttle program manager. “The flight surgeons do private medical conferences with the crew throughout the mission. The crew called down and asked for one during the rendezvous, which was a little bit of a surprise to us. They talked to the crew members, they understood what the issue was. I will just say it is not going to impact any of the objectives of this mission.”

In video shown on NASA TV, Schlegel showed no noticeable illness as the shuttle crew come on board the ISS after shuttle docking. Reports on news wires suggested that Schlegel lost his voice, but that claim was not corroborated by Shannon.

Communication during the spacewalk would be critical. Schlegel appeared to talk with the ISS crew as he entered the station, and floated easily through the Harmony node. About half of all people who fly in space experience Space Adaptation Syndrome, which include symptoms such as nausea, dizziness and headaches. But citing medical privacy policies, Shannon refused to answer any questions about the nature of the medical issue, or whether Schlegel would be available for the second spacewalk of the mission, now slated for Wednesday.

“You guys can fish all day, but I won’t bite,” Shannon said.

The spacewalk will help install the new Columbus science module, brought up in Atlantis’ payload bay. Installation of the module is the primary goal of this mission.

The shuttle docked at 12:17 pm EST on Saturday. As the shuttle approached the station, the ISS crew took photos of the shuttle to check for any damage to Atlantis. They were asked to take special note of a small tear in the insulation blanket of the Orbital Maneuvering System rocket pod along the tail of the shuttle. Shannon said the tear is probably not critical, but that it’s being looked at.

“Nobody is very excited about this one,” he said. “I don’t expect this to be an issue but the team will continue to work it.”

The insulation blankets on the OMS pods experience temperatures around 700 to 1,000 degrees Fahrenheit during peak heating of re-entry. A similar tear on an earlier shuttle flight was repaired by a spacewalking astronaut using surgical staples. Three spacewalks are planned during Atlantis’ current mission and a staple gun is on board if needed.

On a final note, for any Prairie Home Companion fans out there, the shuttle crew wake-up call on Saturday morning was the Powdermilk Biscuit song.

Original News Source: NASA TV

Cargo Ship Launches to the Station

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Although Atlantis is getting ready for its trip back to the International Space Station, it won’t be the only visitor. An unmanned Progress cargo ship blasted off from the Baikonur Cosmodrome in Kazakhstan today, bringing fresh supplies to the International Space Station. The Americans call it Progress 28, while the Russians have designated it M-63.

Let’s pick a designation and call it Progress M-63. The spacecraft lifted off at 4:03 p.m. local time, carrying a load of oxygen, water and food for the crew: US astronauts Peggy Whitson and Daniel Tani and Russian cosmonaut Yiri Malenchenko. It’s also carrying scientific equipment and experiments.

To make room for the inbound cargo ship, the previous Progress M-62 undocked from the station on Monday. It had been docked to the station since December 26, 2007. It will now spend the next few weeks performing a series of autonomous tests.

And in late February, another cargo ship, M-60 will be discarded into the Pacific Ocean, 3,000 km from New Zealand.

Original Source: NASA News Release

Atlantis Will Fly, Despite Bent Hose

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On Wednesday I reported that NASA was looking into a bent coolant hose on the space shuttle Atlantis. They weren’t sure if this might cause a potential launch delay while it was repaired. Shuttle managers met over the weekend, and decided that it wasn’t enough of a problem to delay the launch.

The problem is with one of the shuttle’s four braided hoses that carry the coolant needed to dissipate heat generated while in space. During a routine inspection, workers noticed that this hose had a bit of a kink in it.

The worry is that the hose could be bent further, or even snapped when the shuttle’s payload bays are closed up Sunday night to prepare for next week’s launch. In order to prevent a problem, a worker will use a long pole with a hook to guide the hose into its retraction box with the bays are closed up. Assuming that goes as planned, the shuttle’s launch won’t be delayed.

And even if the hose does break while the shuttle’s in orbit, it’s not a huge problem, according to NASA. There are a total of 4 of these hoses on Atlantis, and it can get by with the remaining ones.

With that worry out of the way, Atlantis is still scheduled for its Thursday launch from Florida’s Cape Canaveral. The shuttle is carrying Europe’s main contribution to the International Space Station: the Columbus science lab. During their time in space, the astronauts will perform three spacewalks to install the laboratory and perform some experiments.

The astronaut crew arrived in Florida today, and the countdown is expected to begin later Monday afternoon. The weather might be a problem, however. Meteorologists are predicting that there’s only a 40% chance of suitable weather on launch day. Friday should be better, though. Even if rain and clouds hold back the launch, there’s an 80% chance the shuttle will be able to lift off at the end of the week.

NASA has already canceled two launch attempts back in December because of problems with the shuttle’s fuel tank sensors. With an already crowded launch schedule, this additional delay pushes back the rest of the shuttle launches.

Original Source: NASA Status Report

“Suits and Ties” Collaborate on Successful Space Station Repair

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At the end of Wednesday’s successful spacewalk to change out a faulty motor on one of the International Space Station’s solar array positioning devices, the astronauts outside the ISS and flight controllers in Houston were congratulating each other on the group effort it took to pull off this particularly tricky and potentially dangerous repair job.

“You guys looked really good to us. Thanks for making it look so easy,” Mission Control in Houston radioed up to the spacewalkers after their seven-hour and 10 minutes EVA.

“Yeah,” said ISS astronaut Dan Tani. “And we did’t even have to put on a tie.”

This spacewalk really was a collaboration between the “suits and ties” at NASA. The suits — spacesuits, that is — were worn by astronauts Tani and Peggy Whitson. The ties were sported by the engineers and astronauts in Mission Control who planned the repair and guided the spacewalkers during the entire EVA.

Tani and Whitson were thanking one tie-wearing astronaut in particular. Tom Marshburn had practiced the choreography of the spacewalk in the Neutral Buoyancy Lab in Houston, and shared his insights with the spacewalkers. Usually astronauts get to practice their own EVA’s in the enormous pool that contains a mock-up of the ISS. But the Bearing Motor Roll Ring Module on the starboard solar array quit working in December when Whitson and Tani were already on board the station. So the plan and nuances of the EVA were tested in the pool by Marshburn and former ISS resident Suni Williams and relayed up to Tani and Whitson.

The spacewalk was especially hazardous because of the risk of electrical shock from 160 volts of electricity that flows through the arrays. For safety, Whitson and Tani waited until the International Space Station was on the dark side of Earth, giving them only 33 minute increments to complete their tasks. Whitson had to squeeze inside the station’s truss girder to swap out the 250 pound (113 kilograms) garbage can-sized motor.

The new motor successfully performed a 360-degree test spin during the spacewalk. It’s power-generating capabilities were tested successfully as well.

“Yay, it works!” exclaimed Whitson as she and Tani watched the solar wing turn. “Excellent, outstanding…isn’t that cool?”

The successful repair means the station should be able to generate enough power to support the new modules that will be brought on the next shuttle missions, the European Columbus science lab, and the Japanese Kibo labratory.

“Given the complexity of this spacewalk and the risks that we had to manage … we are exceptionally pleased with how things went,” flight director Kwatsi Alibaruho said after the EVA.

In addition to the motor repair, Whitson and Tani also performed another inspection of the station’s starboard Solar Alpha Rotary Joint, a 10-ft wide gear that keeps the solar wings pointing toward the sun The SARJ is not working and is contaminated with metal shavings. The spacewalkers evaluated damage from the debris and collected samples from areas previously unseen.

Alibaruho said the new debris samples will help determine what repairs will be done, perhaps later this year. NASA hopes to launch up to five shuttle flights to the ISS this year.

Wednesday’s EVA was the final planned spacewalk of the Expedition 16 mission and the 101st dedicated to space station assembly and maintenance. The spacewalk also marked the sixth career EVA’s for both Whitson and Tani.

So, there’s just one question for Dan Tani: Which is harder — donning a 280 lb spacesuit or tying a Windsor Knot?

Original News Source: NASA TV

Tricky January 30 Spacewalk to Repair ISS Solar Array

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Space station astronauts will conduct a spacewalk on January 30 to replace a faulty positioning motor at base of the station’s two starboard solar arrays. ISS Expedition 16 commander Peggy Whitson and flight engineer Dan Tani will change out the motor in hopes of regaining more power-generating ability of the orbiting laboratory’s expansive solar wings. But the astronauts will have to work fast, since they can only work on the electricity-producing arrays when the sun isn’t shining on them. That only allows 33 minute increments of time to conduct the repairs.

Because of the faulty motor, the solar arrays have been unable to track the sun continuously since early December, when the joint motor suffered a series of electrical shorts. In an earlier spacewalk, Tani and Whitson surveyed the damage and ruled out meteorite damage to the motor. Without the repair, the space station would have enough power to make it through at least the next shuttle mission, currently scheduled for a Feb. 7 launch, but not much further said Kirk Shireman, NASA’s ISS deputy program manager.

If the Wednesday spacewalk is successful, the ISS will have power to last through the planned arrival of a massive Japanese laboratory in April and into the summer, Shireman added.

The broken motor controls a beta gimbal joint that pivots one of the station’s two starboard solar wings to face the sun. NASA hopes replacing the whole motor, a garbage-can sized device that weighs about 250 pounds (113 kilograms), with a backup will fix the problem. The replacement motor was already on board the station, brought up on an earlier flight.

For safety reasons, the astronauts can only work while orbiting on the night side of Earth. If the sun was shining on the solar panels while Whitson and Tani were working on the joint, they would be at risk of shocks due to the high power levels surging through the arrays. They will only have about 33 minutes of total “shadeâ€? at a time to conduct their work. If they can’t replace the motor during one night side pass, they’ll have to wait and finish their task on the next pass. The station continuously orbits the Earth every 90 minutes.

NASA officials said the repair is possible to do in one 33 minute segment, but only if everything goes as planned. Since the damage only occurred recently, Whitson and Tani have not rehearsed the spacewalk in the Neutral Buoyancy Lab in Houston, a giant swimming pool where astronauts train for spacewalks. However, other astronauts on the ground have rehearsed the repair and shared their insights with the astronauts on board the ISS.

Wednesday’s EVA will be the sixth career spacewalk for both Whitson and Tani, and the fifth for the station’s Expedition 16 crew.

This spacewalk is unrelated to on-going analysis of problems with a massive Solar Alpha Rotary joint on the right side of the station’s main power truss that is needed to turn outboard arrays to track the sun. Astronauts discovered metal shavings in the gear’s attached metal ring during past spacewalks, and engineers do not yet understand the cause of the unusual erosion. Whitson and Tani will take another look at the 10-foot (3-meter) wide gear if they have extra time during Wednesday’s excursion, mission managers said.

NASA will broadcast the Expedition 16 crew’s fifth spacewalk live on NASA TV beginning at 4:00 a.m. EST (0900 GMT) on Jan. 30.

Original News Source: NASA TV, Space.com

Paper Boomerang will be Tested on Space Station

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You know this is a burning question on the minds of eight-year olds everywhere: if you threw a boomerang in zero-gravity, would it come back to you? Japanese astronaut Takao Doi plans to test this very premise when he travels to the International Space Station in March 2008.

Doi plans to bring a paper boomerang to the ISS to test whether it will perform the trick of returning to the thrower in zero-gravity. He reportedly decided to test the boomerang at the behest of Yasuhiro Togai, a world boomerang champion from Osaka, Japan. With the announcement that a paper airplane will be launched from the ISS, space is beginning to look like an unruly high school classroom. But these experiments aren’t all fun and games, as there are underlying physical principles that can be explored by such simple tests.

A returning boomerang – when thrown properly – will travel in a circular path which brings it back around to the thrower. The two (or three) fins of a boomerang are shaped like an airplane wing, so when thrown the shape provides lift and causes the boomerang to fly.

Boomerangs fly in a circle because of the lift provided by the leading fin of the boomerang. Because it is spinning around a central axis, one fin provides lift in the direction of travel, then the other does the same. This force in the same direction makes the path of the boomerang form a circle, and as it loses energy because of the pull of gravity the boomerang comes back down to the ground.

Now, the question remains as to what will happen if the force of gravity is not present. The zero-gravity environment of the ISS is a perfect place to test this. The atmosphere of the ISS will still allow the boomerang to generate lift, but will it return to the sender, bounce off the walls, or just spin in place?

Source: Space Travel report

Britain Proposes New International Space Station Modules

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British scientists hope to improve living conditions on the International Space Station (ISS) by designing a new addition: the Habitation Extension Module (HEM). Although the plan is currently unofficial, it is hoped the proposal will get accepted and built for a 2011 launch. This would be a massive victory for UK space aspirations, as the nation currently does not have its own space agency and depends on project collaboration with the European Space Agency (ESA) to develop new space technology. The new HEM design features the UK national flag, the Union Jack, perhaps a symbol for the beginning of a British foothold in space.

The proposed habitat design would actually consist of two modules attached to the Node 3 segment of the station. Intended to provide extra accommodation for six crew members (the station currently holds a complement of three astronauts), this design should be welcomed as the ISS is scheduled to accommodate six people in 2009, signifying that the station will move into a “fully operational” phase of its construction.

As the Space Shuttle would have retired by the time HEM is sent to the station, launch will depend on the Russian Soyuz-Fregat rocket, and final approach to the station would use a built-in propulsion system. In addition to the module, three tons of supplies will be on board, stocking the ISS with food and equipment.

The proposed design will be 12.5 feet in diameter and 18.7 in length, adding a total of 3,531.5 cubic feet of living space. This 24% increase in space from the current living volume of 15,000 cubic feet would surely be a welcomed relief to the ISS occupants, making our only space station a more comfortable place to live and work.

The project would come with a pretty heavy price tag. Convincing the UK government to invest approximately £1 billion ($2 billion) in the construction and running of the module till 2015 might, however, stall the British desire for a strong presence in space.

 Source: Space.com