Toxic Ammonia Misses Spacewalking Astronauts
481261
CAPE CANAVERAL, Fla.  -- Four or five flakes of toxic ammonia fell from a cooling line cap Wednesday but apparently didn't touch two U.S. astronauts conducting the first of three spacewalks planned outside the international space station over the next nine days.
679537
By Traci Watson A team of spacewalking astronauts pulled off the tricky installation of a new piece of the International Space Station on Tuesday, but the success was marred by a problem familiar to all do-it-yourselfers: One of the astronauts lost a tool.
640072
A pair of space station astronauts ventured out on a spacewalk Tuesday to inspect two defective mechanisms that are hobbling power generation at the orbiting complex.
173444
By MIKE SCHNEIDER CAPE CANAVERAL, Fla. - Astronauts working to bring to life a new 17 1/2-ton addition to the international space station lost another bolt to the void during a spacewalk early Wednesday.
110546
Two U.S. astronauts  replaced a broken motor on one of the International Space  Station's solar wings during a spacewalk on Wednesday, clearing  the way for more modules to be added to the outpost.
508709
The space station's two American astronauts went out on a riskier than usual spacewalk Wednesday to fix one of two equipment failures that have crippled their power system and threatened to stall construction.
233226
A spacewalking astronaut did some massive housecleaning at the international space station Monday, tossing out a camera mounting and an ammonia tank weighing more than half a ton.
369585
By Seth Borenstein THE ASSOCIATED PRESS  WASHINGTON -- The first "sniffs of air" of two huge far-away planets reveal that they seem to be missing water, a surprising finding amid weather unlike any planets in our solar system with blast furnace-like gusts amid supersonic winds.
335016
NASA -- Venturing into the vacuum of space, with its extreme temperatures and the challenges of weightlessness in what amounts to a personal spacecraft, can never become routine. Yet humans have made more than 250 spacewalks, 142 of them by NASA astronauts...
65566
Blog: PNNL says go for ammonia borane, not sodium borohydride, for hydrogen
199687
Leaving their orbiting outpost unmanned, the international space station&#39;s two astronauts floated outside on a spacewalk Friday and plugged in new antennas and replaced a worn-out piece of cooling equipment.
744735
By Rasha Madkour  HOUSTON - Two spacewalking astronauts Tuesday began installing the first big addition to the international space station in more than 3 1/2 years, and NASA pronounced the outing a success, even though a small bolt floated off and got lost.
372785
Two astronauts stepped outside the hatch Sunday for the second of what could be a precedent-setting three spacewalks in nine days, making repairs to the international space station's cooling system.
299379
Russian cosmonaut Gennady Padalka and American astronaut Mike Fincke had been in space since April. While in space they carried out four space walks, including one crucial mission to repair
589980
1st LD: Astronauts on space station notice foul odor    WASHINGTON, Sept.
432709
By SETH BORENSTEIN, Associated Press writer  HOUSTON  It's a junkyard out there in space and sometimes astronauts accidentally contribute to the litter.   In 1965, the first American spacewalker, Ed White, lost a spare glove when he went outside for the first time.
167233
CAPE CANAVERAL, Fla. - Leaving the orbiting outpost unmanned, the international space station's two astronauts floated outside on a spacewalk Friday to plug in new antennas and replace a worn-out piece of cooling equipment...