Expedition 39 Touchdown! Space Station Crew Return to Terra Firma

Expedition 39 astronauts Koichi Wakata, Mikhail Tyurin and Rick Mastracchio (left to right) rest after landing in a Soyuz capsule on May 13, 2014.

Credit: NASA TV

Three crew members of the International Space Station have returned safely to Earth, ending their six-month orbital mission.

A Russian Soyuz capsule carrying NASA astronaut Rick Mastracchio, Japanese astronaut Koichi Wakata and cosmonaut Mikhail Tyurin landed on the steppes of Kazakhstan at 9:58 p.m. EDT Tuesday night (May 13; 7:58 a.m. local time on Wednesday, May 14).

The Soyuz undocked from the space station 3 1/2 hours earlier while the two vehicles were above Mongolia, marking the end of Expedition 39 and the beginning of Expedition 40 aboard the orbiting lab.

"What an exciting time we shared in this increment," Expedition 39 Commander Wakata said Monday (May 12) as he handed the station's reins over to NASA astronaut Steve Swanson.

"Congratulations, and best wishes to the crew of Expedition 40 for a successful mission."

Wakata, Mastracchio and Tyurin enjoyed an eventful and historic stint in orbit after arriving at the space station on Nov. 7, 2013.

For example, Wakata became the first Japanese person ever to command the station when he took charge of Expedition 39 on March 10.

Just four days later, Wakata and Mastracchio participated in "Live from Space," a two-hour TV event hosted by Soledad O'Brien that aired on National Geographic Channel, as well as Channel 4 in the United Kingdom.

"Live from Space" gave viewers in more than 140 countries an idea of what it's like to live and work on the orbiting lab, with Wakata giving a guided tour of the $100-billion complex.

Japanese astronaut Koichi Wakata, commander of the International Space Station's Expedition 39 mission, is helped out of the Soyuz capsule.

R2-D2 and NASA ISS Astronaut Celebrate 'Star Wars Day' - Video

A NASA astronaut on the International Space Station beamed a special "May the Fourth" message to "Star Wars" fans on Earth with some help from the intrepid droid R2-D2.

NASA and Lucasfilm teamed up to produce a 1-minute video in honour of "Star Wars Day" — an unofficial fan holiday honoring the space opera on Sunday (May 4).

Each year, "Star Wars" fans celebrate the beloved movie and book franchise on May 4. (That particular day was chosen because "May the Fourth" sounds a lot like "May the force be with you," a famous line from the movie.)

The new video starts by showing R2-D2 rolling through what looks like one of NASA's visitor's centers on Earth. The robot takes in the sights, while chirping in the usual R2-like way.

R2 then gets a message asking the droid to help an astronaut on the space station send down a Star Wars Day message to Earth.

Apparently, the Empire wants to stop NASA's Rick Mastracchio from sending his May the fourth message.

R2-D2 leaps into action, helping Mastracchio beam down his hello to "Star Wars" fans on the planet.

"Looks like we're having some communication issues," Mastracchio said before R2 came to the rescue in the video.

"Looks like we're back now. To everyone on Earth from the International Space Station: May the fourth be with you."

"Star Wars" has been in the news for other reasons this week as well. Just five days before Star Wars Day, Lucasfilm announced the cast for the first in a new series of "Star Wars" movies directed by J.J. Abrams.

"Star Wars: Episode VII," due to hit theaters in December 2015, has a star-studded cast of actors from the original films and other new faces.



Harrison Ford (Han Solo), Carrie Fisher (Leia Organa), Mark Hamill (Luke Skywalker), Peter Mayhew (Chewbacca), Anthony Daniels (C-3PO) and Kenny Baker (R2-D2) are all set to reprise their roles.

Adam Driver, John Boyega, Daisy Ridley, Oscar Isaac, Andy Serkis, Domhnall Gleeson and Max von Sydow are all joining the cast as well.

"We are so excited to finally share the cast of 'Star Wars: Episode VII,'" Abrams said in a statement announcing the cast.

"It is both thrilling and surreal to watch the beloved original cast and these brilliant new performers come together to bring this world to life, once again. We start shooting in a couple of weeks, and everyone is doing their best to make the fans proud."

US President Obama talks with Astronauts on Space Station

President Barack Obama and JAXA astronaut Soichi Noguchi hear a message from International Space Station Commander Koichi Wakata, flanked by NASA astronauts Steve Swanson and Rick Mastracchio, while visiting Miraikan, national museum for emerging science and innovation on April 24, 2014 in Tokyo, Japan. 

President Obama is on an Asian tour where he is due to visit Japan, South Korea, Malaysia and Philippines. 

Credit: The Asahi Shimbun

ISS Astronauts Spacewalk completes urgent repair job

This April 23, 2014 NASA TV image shows International Space Station(ISS) astronauts Rick Mastracchio (L) and Steve Swanson (R) preparing for a spacewalk.

Credit: NASA

Spacewalking astronauts easily replaced a dead computer outside the International Space Station on Wednesday and got their orbiting home back up to full strength.

The two Americans on board, Rick Mastracchio and Steven Swanson, hustled through the urgent repair job, swapping out the computers well within an hour. The new one tested fine.

"Excellent work, gentlemen," Mission Control radioed.

The removed computer, a critical backup, failed nearly two weeks ago. The prime computer has been working perfectly, but NASA wanted to install a fresh spare as soon as possible.

Mission Control waited until after the arrival of a capsule full of fresh supplies Sunday.

Replacing the computer—a compact 50-pound (22-kilogram) box—involved just three bolts, hardly anything for a spacewalking chore.

Engineers do not know why the original failed. Mission Control asked the spacewalkers to keep an eye out for any damage that might explain the breakdown. Nothing jumped out.

Flight controllers were trying to load software into the spare computer on April 11, but it failed to activate.

That set into motion a frenzy of ground meetings and tests to fix the problem.

NASA feared that if the primary computer went down as well, the entire space station would be in jeopardy.

These two computers—the primary and backup—control the pointing of the solar wings and radiators, as well as the movement of the robot-arm rail cart.

It was the first failure of one of dozens of so-called MDMs, or multiplexer-demultiplexers, in and outside the space station.

Mission Control kept the spacewalk short and straight-to-the-point; it lasted a mere one hour and 36 minutes.

All routine spacewalks by U.S. station crew have been on hold since last summer's near-drowning by a spacewalking astronaut.

His helmet filled with water from the cooling system of the suit, and NASA is continuing to investigate the problem.

NASA hopes to reuse the bad computer, once it's inspected indoors by the astronauts and updated.

Their mission accomplished, Rick Mastracchio and Steven Swanson exchanged a few jokes and laughs as they got ready to go back inside.

"My arms are too short for a selfie," Mastracchio said with a chuckle, his camera pointed at himself.

SpaceX Dragon Grappled to Canadarm2

On Sunday, April 20, 2014, the Expedition 39 crew aboard the International Space Station welcomed nearly two-and-a-half tons of supplies and scientific payloads to the station with the arrival of the third SpaceX Dragon commercial cargo spacecraft.

Credit: NASA

This image of SpaceX Dragon grappled by Canadarm2 was sent down by Flight Engineer Steve Swanson to Instagram with the message, "We have a Dragon. All is good."

With SpaceX Dragon securely in the grasp of Canadarm2 , the robotics officer at Mission Control remotely operated the arm to install the capsule to its port on the Earth-facing side of the Harmony (ESA built Node 2) module.

Once SpaceX Dragon was in place, Flight Engineer Rick Mastracchio monitored the Common Berthing Mechanism operations for first and second stage capture of the cargo ship, assuring that the vehicle was securely attached to the station with a hard mate.

Second stage capture was completed at 10:06 a.m. EDT as the station flew 260 miles above Brazil.

ISS Crew Grapples with SpaceX Dragon Spacecraft before Docking

The SpaceX Dragon spacecraft successfully berthed at the space station at 9:06 a.m. EDT. 

The mission is the company's third cargo delivery flight to the station.

ISS Commander Koichi Wakata of the Japan Aerospace Exploration Agency, with the assistance of NASA’s Rick Mastracchio, successfully captured the SpaceX Dragon spacecraft with the station’s robotic arm at 7:14 a.m. EDT.

Operations to berth Dragon to the space station begin at approximately 9:30 a.m.

The mission is the company's third cargo delivery flight to the station.

Dragon's cargo will support more than 150 experiments to be conducted by the crews of ISS Expeditions 39 and 40.



The SpaceX-3 Dragon spacecraft separated from the Falcon rocket as it continues on to the International Space Staton.

Liftoff took place at Cape Canaveral Air Force Station's Space Launch Complex 40 at 3:25 p.m. EDT.

SpaceX Falcon9 and Dragon Cargo Craft Launch Scrubbed

Monday's launch attempt of the SpaceX Dragon cargo craft, loaded with nearly 5,000 pounds of supplies for the International Space Station's Expedition 39 crew, was scrubbed due to a helium leak on the Falcon 9 first stage. 

The next launch opportunity would be Friday, April 18 at 3:25 p.m. EDT if the issue can be resolved.

The launch of the third SpaceX Dragon commercial resupply services mission from Cape Canaveral Air Force Station in Florida will send the vehicle on course to rendezvous with the station several days later.

Commander Koichi Wakata and Flight Engineer Rick Mastracchio will capture the space freighter using the Canadarm2 robotic arm to set it up for its berthing to the Earth-facing port of the Harmony module.

Mission managers and SpaceX had agreed Sunday to proceed with Monday's launch attempt despite the loss Friday of a multiplexer demultiplexer (MDM) backup computer relay system in the S0 truss that assists in providing insight into truss systems, the operation of the external cooling loops, the operations of the Solar Alpha Rotary joints and the Mobile Transporter rail car.

ISS Astronauts Celebrate 'Cosmos' with Weightless Experiment in Space Station - Video

The new "Cosmos" science TV series on Fox has received an out-of-this-world from astronauts on the International Space Station in a new video showing how weightlessness works.

In the new video beamed from space, NASA astronaut Rick Mastracchio considers Isaac Newton's third law of motion - every action produces an equal and opposite reaction - and demonstrates how this works in microgravity, 260 miles (418 kilometers) above Earth.

To demonstrate this, Rick Mastracchio pushes his colleague and ISS Commander, Japanese astronaut Koichi Wakata, along with a model of NASA's now-retired space shuttle.

As Wakata and the model spacecraft float forward, Mastracchio drifts backwards.

NASA astronaut Rick Mastracchio shows how Newton's third law of motion works in microgravity. 

Credit: YouTube | NASA

"This is simple science but the more complex science we're doing here on the space station will help us bring real world benefits back to humanity on Earth, as well as take us further into the cosmos than ever before, including to an asteroid, the moon or on to Mars," Mastracchio said.

Astrophysicist Neil deGrasse Tyson, host of "Cosmos: A Spacetime Odyssey," introduced the video of his "friends in high places," saying, "when you're doing science, you have to do experiments."

ISS Expedition 38 Takes an In-Flight Crew Portrait

Expedition 38 crew members pose for an in-flight crew portrait in the Kibo laboratory of the International Space Station on Feb. 22, 2014. 

Pictured (clockwise from top center) are Russian cosmonaut Oleg Kotov, commander; Japan Aerospace Exploration Agency astronaut Koichi Wakata, Russian cosmonaut Sergey Ryazanskiy, NASA astronauts Rick Mastracchio and Mike Hopkins, and Russian cosmonaut Mikhail Tyurin, all flight engineers. 

Image Credit: NASA

ISS Cosmonauts Hit Snag with HD Cameras during Record-Breaking Spacewalk

Cosmonauts Oleg Kotov, Expedition 38 commander, and flight engineer Sergey Ryazanskiy perform a spacewalk outside the International Space Station on Dec. 27, 2013. 

NASA astronaut Rick Mastracchio took this photo from inside the station.

Credit: NASA/Rick Mastracchio, via @AstroRM

Two Russian cosmonauts installed new HD camera eyes on the International Space Station during a record-setting spacewalk Friday (Dec. 27), only to have to return the devices inside due to an unspecified data glitch.

Cosmonauts Oleg Kotov and Sergey Ryazanskiy spent just over eight hours — a new endurance record for Russian spacewalks — working outside the space station to install the new Earth-watching cameras for the Canadian company UrtheCast as part of an agreement with Russia's Federal Space Agency. 

But shortly after the installation, Russian engineers reported a problem receiving data from the imaging system.

"It appears that we have seen an unsuccessful attempt at bringing those two cameras to life," NASA spokesman Rob Navias said during spacewalk commentary. 

"The exact cause of the problem is not known at this time."


The new cameras are designed to snap detailed views of Earth from space for UrtheCast, which will then provide the imagery to customers via the Internet.

They launched to the station in late November on the Russian Progress 53 cargo ship.

"UrtheCast's two cameras will stream unprecedented footage of our evolving Earth to anyone with an internet connection," the company's website promises.

"In near real-time, you will be able to visit your favorite locales and learn about current events as they unfold."

The UrtheCast cameras include a high-resolution instrument on a swivel platform for detailed observations, and a medium-resolution instrument attached to a fixed platform.

Both cameras were initially installed by Kotov and Ryazanskiy on their respective Earth-facing platforms outside the station's Zvezda service module.

"When the flight control team at the Russian Mission Control Center outside Moscow did not see the expected telemetry and electrical connectivity from the newly installed medium and high resolution cameras, Kotov and Ryazanskiy were directed to remove the cameras and return them to the airlock for further analysis," NASA officials said in a statement.

"The spacewalkers also were instructed to take detailed photographs of the electrical connectors mated earlier for additional review."

Astronaut Mike Hopkins on Dec. 24 Spacewalk

On Dec. 24, 2013, NASA astronaut Mike Hopkins, Expedition 38 Flight Engineer, participates in the second of two spacewalks, spread over a four-day period, which were designed to allow the crew to change out a degraded pump module on the exterior of the Earth-orbiting International Space Station. 

He was joined on both spacewalks by NASA astronaut Rick Mastracchio, whose image shows up in Hopkins' helmet visor.

The pump module controls the flow of ammonia through cooling loops and radiators outside the space station, and, combined with water-based cooling loops inside the station, removes excess heat into the vacuum of space.

Image Credit: NASA

ISS Astronauts Celebrate Holidays in Orbit

NASA astronaut Rick Mastracchio performs a spacewalk outside the International Space Station on Dec. 22, 2013, the first of two spacewalks to replace an ammonia coolant pump in one of two cooling loops on the orbiting lab.

Credit: NASA

Six space travelers living in orbit definitely aren't home for Christmas today, but that doesn't mean they won't get into the holiday spirit on the International Space Station.

The space station's six-man Expedition 38 crew includes two Americans, three Russians and one Japanese astronaut.

This year, Christmas falls between two spacewalks — a Christmas Eve spacewalk to fix the outpost's cooling system and a Dec. 27 excursion by Russian cosmonauts — so it is likely a welcome rest in an otherwise busy week.

"Hey folks, MERRY CHRISTMAS!" NASA astronaut Rick Mastracchio wrote in a Twitter post Sunday (Dec. 22), adding that he would write more after finishing the station's "home improvement project" to replace a cooling system pump.

He and NASA astronaut Mike Hopkins finished that work in a spacewalk on Tuesday.

ISS Astronauts complete Coolant Pump repair

Astronauts aboard the International Space Station have received a gift just in time for Christmas: a new pump module to repair their ailing cooling system and to restore the outpost to full power.

Rick Mastracchio and Mike Hopkins embarked on their second spacewalk together, setting out at 6:53 a.m. EST (1153 GMT) on Tuesday (Dec. 24) to complete the work they began Saturday to remove and replace an ammonia pump module with a faulty flow control valve.

NASA's Mike Hopkins holds the space station's new pump module while floating past a Russian Soyuz spacecraft. 

Hopkins is riding the orbiting outpost's robotic arm to install the new pump module and fix the laboratory's vital cooling system.

NASA Space suit issue prompts delay of second spacewalk

In this image made from video provided by NASA, astronaut Rick Mastracchio performs a space walk outside the International Space Station on Saturday, Dec. 21, 2013. 

Mastracchio and Michael Hopkins ventured out of the station to try to revive a crippled cooling line. 

AP Photo/NASA

Astronauts removed an old space station pump Saturday, sailing through the first of a series of urgent repair spacewalks to revive a crippled cooling line.

The two Americans on the crew, Rick Mastracchio and Michael Hopkins, successfully pulled out the ammonia pump with a bad valve—well ahead of schedule.

That task had been planned for the next spacewalk, originally scheduled for Monday but now delayed until Tuesday, Christmas Eve, because of the need for a suit swap.

"An early Christmas," observed Mission Control as Mastracchio tugged the refrigerator-size pump away from its nesting spot.

If Mastracchio and Hopkins keep up the quick work, two spacewalks may be enough to complete the installation of a spare pump and a third spacewalk will not be needed as originally anticipated.

Several hours after Saturday's spacewalk ended, Mission Control bumped spacewalk 2 to Tuesday to give Mastracchio enough time to prepare a spare suit.

His original suit was compromised when he inadvertently turned on a water switch in the air lock at the end of Saturday's excursion.

NASA officials said Saturday night that it's unclear whether a third spacewalk will be needed and when it might occur, if required.

A third spacewalk had been slated for Christmas Day before the latest turn of events. NASA requires a day off between spacewalks for astronaut rest.

The space station breakdown 10 days earlier left one of two identical cooling loops too cold and forced the astronauts to turn off all nonessential equipment inside the orbiting lab, bringing scientific research to a near-halt and leaving the station in a vulnerable state.

Mission Control wanted to keep the spacewalkers out even longer Saturday to get even further ahead, but a cold and uncomfortable Mastracchio requested to go back.

The spacewalk ended after 5½ hours, an hour short on time but satisfyingly long on content.

Earlier, Mastracchio managed to unhook all the ammonia fluid and electrical lines on the pump with relative ease, occasionally releasing a flurry of frozen ammonia flakes that brushed against his suit.

A small O-ring floated away, but he managed to retrieve it.

"I got it, I got it, I got it. Barely," Mastracchio said as he stretched out his hand.

"Don't let that go, that's a stocking stuffer," Mission Control replied.

"Don't tell my wife," Mastracchio said, chuckling, as he put it in a small pouch for trash.

Mastracchio, a seven-time spacewalker, and Hopkins, making his first, wore extra safety gear as they worked outside.

NASA wanted to prevent a recurrence of the helmet flooding that nearly drowned Luca Parmitano, an ESA Italian astronaut last summer, so Saturday's spacewalkers had snorkels in their suits and water-absorbent pads in their helmets.

To everyone's relief, the spacewalkers remained dry while outside. But midway through the excursion, Mastracchio's toes were so cold that he had to crank up the heat in his boots.

Mission Control worried aloud whether it was wise to extend the spacewalk to get ahead, given Mastracchio's discomfort.

Not quite two hours later, Mastracchio had enough as he clutched the old pump.

When Mission Control suggested even more get-ahead chores, he replied, "I'd like to stow this old module and kind of clean up and call it a day."

He said a couple of things were bothering him, not just temperature, and declined to elaborate when asked by Mission Control what was wrong.

Flight controllers obliged him. Once the old pump was secured to a temporary location, the spacewalkers started gathering up their tools to go in.

Adding to the excitement 260 miles (418 kilometers) up, a smoke alarm went off in the space station as the astronauts toiled outside. It was quickly found to be a false alarm.

The pump replacement is a huge undertaking attempted only once before, back in 2010 on this very unit.

The two astronauts who tackled the job three years ago were in Mission Control, offering guidance.

Mastracchio promised to bring back a wire tie installed on the pump by the previous spacewalkers. "Oh, awesome, thanks Rick," replied the astronaut in Mission Control who put it on.

The 780-pound (354-kilogram) pump is about the size of a double-door refrigerator and extremely cumbersome to handle, with plumbing full of toxic ammonia.

Any traces of ammonia on the spacesuits were dissipated before the astronauts went back inside, to avoid further contamination.

NASA's plan initially called for the pump to be disconnected in the first spacewalk, pulled out on the second spacewalk and a fresh spare put in, and then all the hookups of the new pump completed in the third outing.

ISS Astronaut Rick Mastracchio on Cooling System Pump EVA

Standing on the robot arm, Rick Mastracchio has removed the failed pump module from the space station's truss.

NASA astronaut Rick Mastracchio on EVA to repair cooling system

NASA astronaut Rick Mastracchio stands on the International Space Station's robotic arm during an urgent spacewalk to fix the station's vital cooling system.

This NASA graphic shows the position for QD operations.

A NASA graphics show the starboard pump module worksites on the International Space Station and how the starboard pump module removal will take place outside the International Space Station, scheduled for Dec. 21, 23 and 25, 2013.

ISS Astronauts Prepare for EVA Spacewalks to Repair Coolant System

Expedition 38 crew member Mike Hopkins checks out the spacesuit he will wear outside the International Space Station on Saturday, Dec. 21, 2013. 

He and fellow astronaut Rick Mastracchio will conduct a series of spacewalks to replace an ammonia pump that is part of the station's coolant system. 

This will be Hopkins' first spacewalk, while Mastracchio has had six previous ones on STS-118 and STS-131

More Information

NASA rigs up snorkel in ISS spacesuit after risky water leak

Michael Hopkins

US astronaut Michael Hopkins waves on September 26, 2013 before the launch of a Soyuz-FG rocket at the Russian-leased Baikonur cosmodrome in Kazakhstan 

Snorkels in space? 

NASA dreamed up the idea as a quick fix to a dangerous spacesuit problem so astronauts can step out to repair an equipment breakdown at the International Space Station.

One of the two US astronauts preparing to embark on a series of spacewalks later this week and next will be wearing an American-made suit that had a helmet leak in July, nearly drowning the European astronaut who wore it.

The three emergency spacewalks are planned for December 21, 23 and 25 in order to fix a broken cooling system at the orbiting outpost.

Luca Parmitano

An investigation into the cause of the leak that flooded ESA's Italian astronaut Luca Parmitano's helmet and forced him to rush back inside the station in July is still ongoing, NASA officials told reporters Wednesday.

Therefore, faced with an unexpected valve failure last week in the system that regulates the temperature of equipment aboard the 15-year-old orbiting outpost, NASA engineers had to scramble to figure out a way to make the US spacesuits safe for use.

First off, they have replaced the water pump system in the suit Parmitano wore.

In addition, an extra helmet absorption pad has been installed at the inside back of the helmet to soak up any potential leak, and a snorkel has been rigged up to offer another breathing route if needed.

"Some smart engineers on the ground were able to figure out, 'Hey this is a similar diameter to a snorkel that you have for scuba diving,'" said NASA lead spacewalk officer Allison Bolinger.

"By just sacrificing one of our spares on board they were able to come up with a way to just snip off the ends and then file it so it is not rough in the crew member's mouth and then apply Velcro."

Rick Mastracchio

American astronaut Mike Hopkins will be wearing the suit Parmitano wore. Both he and fellow US astronaut Rick Mastracchio will have the new snorkels and pads inside their spacesuits as a safety measure.

Their task is to remove the pump module with the faulty valve and replace it with a spare pump that was already aboard the ISS.

Even though the formal investigation into the leaking helmet has not been completed, NASA officials said they were confident that their back-up solutions would allow the astronauts to be safe on their risky outings.

ISS Astronauts: Work continues to resolve Cooling Loop Issues for Cygnus arrival

Flight Engineer Doug Wheelock worked outside the International Space Station in August 2010 to install a spare pump module.

NASA engineers continued efforts Sunday to regulate temperatures in one of two cooling loops on the International Space Station affected by the malfunction last week of a flow control valve in a cooling pump on the station’s starboard truss.

A Flow Control Valve in the starboard Pump Module that enables the flow of ammonia to cool station systems stopped positioning itself properly last Wednesday, resulting in a drop of temperature in Cooling Loop A.

That necessitated the shutdown of some support systems on the station. The temperature must be warm enough in the cooling lines to allow the system’s heat exchangers to dissipate excess heat from the station through the external radiators on the complex.

The primary heat rejection capability for station systems shifted last week to Cooling Loop B that uses a fully operational Pump Module on the port truss.

Efforts overnight to fine-tune the position of an isolation valve associated with the flow control system in the Pump Module into a “sweet spot” to assist the faulty Flow Control Valve in regulating the affected cooling loop’s temperatures were still being evaluated as engineers continue to review the data, valve positioning techniques and additional methods of temperature management in the loop.

Meanwhile, parallel work is ongoing to either enable Orbital Sciences Corp. to launch its Antares rocket and the Cygnus cargo craft from the Wallops Flight Facility, Va. on its first resupply mission to the space station, or for Expedition 38 astronauts Rick Mastracchio and Michael Hopkins to mount a suite of spacewalks beginning Thursday to replace the faulty pump.

The International Space Station Program continues to keep both options on the table pending further engineering analysis and troubleshooting efforts on the station’s cooling system.

While the engineering work on the station’s cooling loop continued, technicians at Wallops prepared to load time-critical science cargo in the Cygnus spacecraft Sunday afternoon to preserve several days of launch opportunities beginning Thursday night.

The current schedule calls for the vehicle fairing to be installed on the Antares upper stage around Cygnus on Monday.

The Antares rocket and attached Cygnus are scheduled to rollout to the launch pad at Wallops in the wee hours Tuesday.

Meanwhile, aboard the space station, Mastracchio and Hopkins continued to prepare their spacesuits and other equipment in the Quest airlock Sunday should they be called upon to conduct spacewalks to replace the Pump Module.

ISS Astronaut Rick Mastracchio gives an update on the cooling system failure

ISS crew member Rick Mastracchio gives an update on the cooling system failure that occurred on Dec. 12, 2013 and the possible spacewalk to repair.