Uncertainty over shuttle launch
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Nasa says it is unsure when the Atlantis orbiter will lift off as it grapples with a sensor problem on the shuttle.
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NASA decided to try to launch the space shuttle Atlantis on Wednesday, after a delay caused by a lightning strike and the threat of bad weather.
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By MIKE SCHNEIDER CAPE CANAVERAL, Fla. - NASA on Tuesday postponed next month's launch of space shuttle Atlantis after a hail storm left hundreds of small dents on the spacecraft's external fuel tank and on a wing.
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They say the space shuttle would likely be ready to fly by the currently planned launch date in May or June, but cautioned that efforts to devise a way to do onboard repair of damaged heat shielding were moving slowly.
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CAPE CANAVERAL, Florida  - The crew of the space   shuttle Atlantis climbed into their ship for launch from   Florida on Friday, but a problem with a sensor in the shuttle's   external fuel tank may prompt another delay, officials said.
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CAPE CANAVERAL, Florida  - NASA on Friday   postponed the launch of the space shuttle Atlantis on a mission   to restart construction of the International Space Station   after a fuel sensor failed, officials said.
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NASA has said it is aiming for a mid-May launch of the first shuttle flight since the Columbia tragedy in February 2003. The launch date was the latest of several set by the space agency, and just as subject to change.
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SPACE.com / CAPE  CANAVERAL, Fla. - A cloudy threat has grown for the planned Wednesday launch of NASA's shuttle Atlantis, though the weather outlook remains favorable for the spacecraft's orbital construction mission.
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The countdown clock on Sunday began ticking toward a Wednesday launch of the space shuttle after a week of weather delays kept Atlantis grounded. The launch time was set for 12:29 p.m. EDT Wednesday. If the shuttle does not lift off then, NASA has launch opportunities on the following two days.
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By Mike Schneider THE ASSOCIATED PRESS  CAPE CANAVERAL, Fla. -- Low clouds forced NASA to delay the launch of space shuttle Discovery late Thursday, and a forecast for strong winds prompted the space agency to postpone another attempt by at least two days.
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CAPE CANAVERAL, Fla. -- Forecasters predicted an 80 percent chance that the weather would allow NASA to launch its first space shuttle mission of the year at 7:38 p.m.
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CAPE CANAVERAL, Florida  - NASA hopes to take a   second shot at launching the U.S. space shuttle Atlantis next   week after a lightning strike and threatening weather derailed   plans for an August mission to resume construction of the   International Space Station.
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CAPE CANAVERAL, Fla.  -- After more than a week of storm delays, NASA may be getting its best shot weather-wise for launching space shuttle Atlantis, officials said Monday.  There was only a 20 percent chance that weather would prohibit the shuttle from blasting off at 12:28 p.m.
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NASA officials said they were confident they will be able to launch the space shuttle Atlantis on Friday for the first mission of the year, after a launch date in March was scrapped due to hail damage.
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Despite weather concerns and a small chunk of ice that threatened to delay the beginning of the shuttle Discoveryâs mission, everything seemed to fall into place.
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CAPE CANAVERAL, Fla. - NASA managers on Wednesday left open the possibility that space shuttle Atlantis would blast off this week on a mission to resume construction of the international space station.
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The repair of a landing gear leak on the  space shuttle Discovery could put in jeopardy the U.S.  spacecraft&#39;s October 23 launch date on a construction mission  to the International Space Station, NASA said on Monday.