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International Space Station trio safely returns to Earth
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: September 25, 2010


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Running one day late, a Russian Soyuz capsule carried two Russian cosmonauts and a NASA astronaut back to Earth early Saturday, the final chapter in an action-packed six-month mission aboard the International Space Station.


Credit: NASA/Bill Ingalls
 
Dropping through a clear sky under a huge orange-and-white parachute, the charred Soyuz descent module landed upright and on target near the town of Arkalyk at 1:23 a.m. EDT (11:23 a.m. local time).

"And the search and recovery forces now report the Soyuz TMA-18 has landed," said Rob Navias, mission control commentator at the Johnson Space Center in Houston.

"The soft landing engines reported to have worked perfectly. Alexander Skvortsov, Tracy Caldwell Dyson and Mikhail Kornienko, back on Earth after 176 days in space."

Russian recovery forces, including NASA flight surgeons and support personnel, rushed to the landing site from nearby staging areas to assist Skvortsov, Kornienko and Caldwell Dyson as they began the process of re-adapting to Earth's gravity.

But all three appeared relaxed and in good spirits after they were assisted from the spacecraft, enjoying fresh fruit and chatting with recovery personnel.

After initial medical exams, all three crew members were to be flown to Karaganda for a traditional Kazakh welcome. Skvortsov and Kornienko then planned to head for Star City near Moscow while Caldwell Dyson was scheduled to fly back to the Johnson Space Center in Houston aboard a NASA jet.

Strapped into the Soyuz TMA-18 spacecraft, the same vehicle that carried them into orbit April 2, Skvortsov, Kornienko and Caldwell Dyson undocked from the space station's upper Poisk module at 10:02 p.m. Friday.

An attempt to undock Thursday night was blocked by problems with a sensor in the docking mechanism holding the Soyuz to the Poisk docking port. After extensive troubleshooting, station flight engineer Fyodor Yurchikhin installed jumper cables that emulated the expected signals from a bypassed "hatch locked" sensor, restoring the docking system to operation.

There were no problems during the second undocking exercise Friday and after moving the Soyuz a safe distance away, Skvortsov fired the ship's braking rockets for four minutes and 21 seconds starting at 12:31:17 a.m. Saturday. That slowed the craft by about 258 mph and put it on course toward the targeted landing site.

After a half-hour free fall, the Soyuz TMA-18 descent module fell into the discernible atmosphere at an altitude of about 63 miles at 12:59 a.m. Parachute deployment was normal, and the capsule touched down without incident.


Credit: NASA
 
The most dramatic moments of the crew's six months in space came at the end of July when one of the space station's two coolant loops shut down because of an ammonia pump failure.

Forced to power down numerous space station systems to prevent overheating, the station crew quickly geared up for a complex three-spacewalk repair job by Caldwell Dyson and Douglas Wheelock.

"What would historians write about this increment? Well, certainly the headline would be the pump module remove and replacement, the day the ammonia stopped flowing in loop A and the three dramatic spacewalks and all of the work that was involved to change those out in the limited amount of time we felt we had," Caldwell Dyson said before undocking.

"I think historians could write a whole lot about that, everything from the problem itself to how this space station is so robust that it can withstand a failure like that.

After the successful spacewalks, Caldwell Dyson told CBS News the experience was "awe inspiring."

"You know, for the last four or five months I've been looking out our cupola window at the sunrises and sunsets and been brought to tears by the multitude of stars once the sun goes down," she said. "And I wondered just how I would feel when I went out there.

"For me, my first EVA was a culmination of 12 years of training and being here and watching and learning and having a huge desire to do that. And so the feeling I was having out there, being on structure, outside the space station, was as emotional as you can get in an EMU (spacesuit), looking out at the sunrise for the first time. It was, like I said, a culmination of so much desire and years of training, it was a feeling I'll never forget."

In an interview last week with ABC News, she said she would miss her two crewmates "because as soon as we land ... I get on a plane and I come right back to Houston and my two Russian crewmates, who I spent all my time with, I won't be able to see for a couple of weeks.

"I'm definitely going to miss the views," she added. "I don't think there's a time I could enter the cupola with the intent of staring at the views and not get a little choked up thinking this might be the last time. But then I'm also encouraged by the fact that not too many people get to see that view and I try to take it in (so) I can help describe it to folks when I come back and help them feel a little bit of it.

"The one thing I'm not going to miss is the lack of longevity in my toothbrush. I'm really looking forward to having running water," she laughed.

The departure of Soyuz TMA-18 left the International Space Station with a crew of three: Expedition 25 commander Wheelock, Yurchikhin and Shannon Walker.

They will have the station to themselves for the next two weeks before the arrival of three fresh crew members aboard an upgraded Soyuz TMA-01M spacecraft scheduled for launch Oct. 7.

Spaceflight Now Plus
Additional coverage for subscribers:
VIDEO: REMARKABLE VIDEO OF CREW EXITING CAPSULE PLAY
VIDEO: AERIAL FOOTAGE OF THE SOYUZ SAFELY LANDING PLAY
VIDEO: SOYUZ TMA-18 DEPARTS THE SPACE STATION PLAY
VIDEO: CREW BOARDS SOYUZ CAPSULE FOR DEPARTURE PLAY
VIDEO: SPACE STATION CHANGE OF COMMAND CEREMONY PLAY

VIDEO: WATCH CARGO FREIGHTER DOCK TO SPACE STATION PLAY
VIDEO: LAUNCH OF SOYUZ ROCKET WITH PROGRESS 39P PLAY

VIDEO: POST-SPACEWALK NO. 3 STATUS BRIEFING PLAY
VIDEO: SPACEWALKERS CONCLUDE THE THIRD EVA PLAY
VIDEO: AMMONIA HOSES ARE ATTACHED TO THE PUMP PLAY
VIDEO: POWER AND DATA LINES BRING PUMP TO LIFE PLAY
VIDEO: REPLACEMENT PUMP SECURELY BOLTED DOWN PLAY
VIDEO: PUMP INSERTED INTO SPACE STATION SLOT PLAY
VIDEO: SPACEWALKER HAULS PUMP OVER TO TRUSS PLAY
VIDEO: RETRIEVING THE REPLACEMENT PUMP PLAY
VIDEO: SPACEWALK NO. 3 BEGINS PLAY

VIDEO: POST-SPACEWALK NO. 2 STATUS BRIEFING PLAY
VIDEO: FAILED COOLANT PUMP REMOVED FROM THE STATION PLAY
VIDEO: ROBOT ARM MANEUVERS SPACEWALKER AROUND PLAY
VIDEO: POWER AND DATA LINES UNPLUGGED PLAY
VIDEO: TROUBLESOME UMBILICAL DETACHED PLAY
VIDEO: NO REPEAT OF AMMONIA LEAK PLAY

VIDEO: POST-SPACEWALK NO. 1 STATUS BRIEFING PLAY
VIDEO: PROBLEM CONNECTOR FINALLY FREED BUT THEN LEAKS PLAY
VIDEO: LEFT-HAND AMMONIA UMBILICAL COMES OFF WITH EASE PLAY
VIDEO: SKIPPING OVER PROBLEM CONNECTOR TO DO ANOTHER PLAY
VIDEO: TROUBLES AND ADVICE FOR STUCK AMMONIA LINE PLAY
VIDEO: PUMP'S SMALL COOLING LINE UNPLUGGED PLAY
VIDEO: SPACEWALKER DOUG WHEELOCK WORKS ON OLD PUMP PLAY
VIDEO: BRIEFING ON PUMP FAILURE AND SPACEWALKS PLAY

VIDEO: FULL BROADCAST OF SUPPLY SHIP'S DOCKING PLAY
VIDEO: WATCH CARGO FREIGHTER DOCK TO SPACE STATION PLAY
VIDEO: PROGRESS 38P FREIGHTER LAUNCHED PLAY

VIDEO: ORANGE COUNTY AND AL JAZEERA MEDIA INTERVIEWS PLAY

VIDEO: SOYUZ RELOCATED FROM ZVEZDA TO RASSVET PLAY

VIDEO: WELCOME CEREMONY FOR THE NEW RESIDENTS PLAY
VIDEO: POST-DOCKING NEWS BRIEFING IN RUSSIA PLAY
VIDEO: SOYUZ DOCKS TO THE SPACE STATION PLAY

VIDEO: FULL EXPERIENCE FROM LIFTOFF TO ORBIT PLAY
VIDEO: ENTIRE EXPEDITION 24 LAUNCH BROADCAST PLAY
VIDEO: CREW DEPARTS SITE 254 FOR LAUNCH PAD PLAY
VIDEO: VIPS MEET THE CREW ON LAUNCH MORNING PLAY
VIDEO: CREW MEMBERS DON THEIR SOKOL SPACESUITS PLAY
VIDEO: LAUNCH MORNING TRADITIONS AT CREW QUARTERS PLAY

VIDEO: SOYUZ ROCKET ROLLED TO THE LAUNCH PAD PLAY
VIDEO: POST-ROLLOUT COMMENTS FROM NASA OFFICIAL PLAY
VIDEO: ASSEMBLY OF SOYUZ COMPLETED IN THE HANGAR PLAY
VIDEO: HIGHLIGHTS OF CREW'S ACTIVITIES AT BAIKONUR PLAY
VIDEO: CREW'S DEPARTURE FROM STAR CITY TRAINING BASE PLAY
VIDEO: PRIME AND BACKUP CREWS MEET WITH REPORTERS PLAY
VIDEO: CEREMONIAL VISIT TO RED SQUARE IN MOSCOW PLAY
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