clear
Saturday May 28th, 2016 9:46AM

NASA orders urgent spacewalk repairs at space station

By The Associated Press
CAPE CANAVERAL, Fla. (AP) -- NASA has ordered up a series of urgent spacewalks to fix a broken cooling line at the International Space Station.

Station managers decided Tuesday to send two American astronauts out as soon as possible to replace a pump with a bad valve. It's a major job that will require three spacewalks - Saturday, Monday and next Wednesday on Christmas Day.

"The next week will be busy with space walks so not much tweeting from here," NASA astronaut Rick Mastracchio tweeted from space soon after the decision was announced.

The spacewalks are taking priority over the launch of a supply ship from Virginia. The commercial delivery had been scheduled for this week, but is now delayed until at least mid-January.

Half of the station's cooling system shut down last Wednesday, forcing the six-man crew to turn off all nonessential equipment, including some science experiments. Because of the valve failure, one of the two cooling lines became too cold.

The space station cooling system, which runs ammonia through the lines, is critical for dispelling heat generated by on-board equipment.

While the astronauts are safe and comfortable, NASA wants the system back up to full strength, in case of another failure that could leave the orbiting outpost even more vulnerable than it is right now.

Flight controllers tried in vain to fix the valve remotely, then came up with a plan to use another valve to regulate the temperature. Some success was reported, and for a while, engineers thought the space station could limp along with the short-term solution. But on Tuesday, managers opted for spacewalks right now.

This is the same pump that was replaced by a pair of spacewalking astronauts in 2010. Three spacewalks were needed then.

Mastracchio and astronaut Michael Hopkins trained for just such a repair before rocketing into orbit. They have been prepping all week, just in case of just such a decision.

Orbital Sciences Corp., meanwhile, will stand down from its planned Thursday night launch of its Cygnus cargo ship from Wallops Island, Va.

The station crew includes three Russians and one Japanese, aside from the two Americans.
© Copyright 2016 AccessWDUN.com
All rights reserved. This material may not be published, broadcast, rewritten, or redistributed without permission.
S&P 500 index has its best year since 1997
The stock market closed out a record year with more all-time highs on Tuesday, giving U.S. indexes their biggest annual gains in almost two decades.
6:56PM ( 2 years ago )
Colorado readies for 'Green Wednesday' pot sales
Police were adding extra patrols around pot shops in eight Colorado towns that plan to allow recreational sales to anyone over 21 on Jan. 1.
1:52PM ( 2 years ago )
Kerry seeks framework for Mideast peace talks
A senior State Department official says Secretary of State John Kerry will try this week to get Israel and the Palestinians to agree on a framework for negotiating a final peace agreement, yet cautions against raising expectations for Kerry's latest round of shuttle diplomacy.
1:35PM ( 2 years ago )
U.S. News
Ethics laws set to take effect Jan. 1 in Georgia
After dominating much of the legislative session, a set of major ethics reforms is scheduled to take effect Jan. 1.
7:04PM ( 2 years ago )
Sex offender held in Hall County for failing to register
A 47-year-old man was booked into the Hall County Jail Tuesday, being held without bond for allegedly failing to register as a sex offender, his second such arrest.
6:09PM ( 2 years ago )
Pharmacy robberies may involve same suspect
Oakwood Police Tuesday afternoon released details in a pharmacy robbery they're investigating, similar to one that happened in the Hall County Tuesday morning.
5:46PM ( 2 years ago )
Local/State News
Amid shouts of 'shame,' House GOP defeats gay rights measure
Democrats shouted "shame," but House Republicans switched their votes and defeated a measure to protect gay rights
8:03PM ( 1 week ago )
CDC director Freiden warns GOP Zika bill is inadequate
The head of the Centers for Disease Control and Prevention warned Wednesday that a House GOP measure to combat the Zika virus is inadequate to deal with the swelling threat to public health
7:36PM ( 1 week ago )
Trump unveils list of his top picks for Supreme Court
Donald Trump, the presumptive Republican nominee for president, released Wednesday a list of 11 potential Supreme Court justices he plans to vet to fill the seat of late Justice Antonin Scalia if he's elected to the White House.
3:31PM ( 1 week ago )
1st US penis transplant could bring hope to maimed soldiers
A 64-year-old cancer patient has received the nation's first penis transplant, a groundbreaking operation that may also help U.S. veterans maimed by roadside bombs
8:04PM ( 1 week ago )
States dig in against directive on transgender bathroom use
Politicians in Texas, Arkansas and elsewhere are vowing defiance over the Obama administration's new directive on transgender bathroom use
9:19PM ( 2 weeks ago )