This story was updated at 5:26 a.m. EST (1020 GMT).
CAPE
CANAVERAL, Fla. — Today is the big day for NASA's launch of space shuttle
Atlantis — maybe.
When the
100-ton orbiter launches, it will carry the seven-astronaut crew of the STS-122
mission and the European Space Agency's (ESA) new Columbus science laboratory
module into space.
But rainy weather moving toward Kennedy Space Center has a 70 percent chance of prompting NASA officials to
scrub their planned 2:45 p.m. EST (1945 GMT) launch and try another day.
"We're feeling very good about this opportunity," said STS-122 commander Stephen Frick on Monday. "We'll keep looking at the weather, but we're very happy about the condition of Atlantis."
Ready to
launch
Last night,
NASA unveiled the orbiter at launch PAd 39A by rolling back its massive rotating service
structure (RSS), which technicians use to service and inspect the shuttle launch system. And with the orbiter nearly prepared for launch, so are its
astronauts.
Frick will be joined by pilot Alan Poindexter as well as mission
specialists Leland Melvin, Rex Walheim and Stanley Love. ESA astronauts Hans
Schlegel and Leopold Eyharts also join the crew.
While in
space, Walheim, Schlegel and Love will execute several spacewalks to install
the Columbus lab as well as perform some on-orbit maintenance. Expedition 16
astronaut Dan Tani, who has lived on the space station since October 2007, will
switch places with Eyharts and head home.
NASA
expects the crew to safely return to Earth on Feb. 18 if the agency manages to
launch the orbiter today.
Rained out?
George Diller, a NASA spokesperson here at KSC, said mission managers met this morning and decided there were no issues to violate tanking of the orbiter's pumpkin-colored
external fuel tank.
"We are go to commence tanking," Diller said. The 3-hour process of loading some 500,000 gallons (1.9
million liters) of cryogenic fluids into the tank, which started at 5:21 a.m. EST (1021 GMT), marks a serious attempt
by the agency to launch.
"The only issue [for launch] is weather," he noted. If rain or winds interfere with launch today, NASA test
director Jeff Spaulding said there will be ample opportunities to make a space shot.
"We
have a lot of flexibility and a lot of options out there if required," Spaulding said of launch opportunities extending into March, should NASA choose
to scrub. "We're in really good shape."
The next
two windows for Atlantis to blast off and catch up with the International Space
Station (ISS) are Friday at 2:19 p.m. EST (1919 GMT) and Saturday at 1:57 p.m. EST
(1857 GMT), should NASA call it quits for the day.
Spacey
science
If Atlantis does launch this afternoon, it will ferry the Columbus lab to the space station, where astronauts plan to install it during their 11-day mission.
The
high-tech, 10.3-ton cylinder will be as big as a small bus and keep ESA astronauts
busy for at least seven years with space-based experiments.
"It's
extremely important after 12 years of working on the [Columbus module] program
to have something that gets launched," said Alan Thirkettle, ISS program
manager for the ESA. "We'll own a part of the station, we'll have the
rights to have our astronauts flying on there ... to be icons for youth of the
future in Europe."
Thirkettle
explained that the module's on-orbit experiments are expected to help develop new
medicine, materials and water treatment techniques.
NASA
will broadcast Atlantis' STS-122 mission live on NASA TV. Click here for SPACE.com's
STS-122 mission coverage and NASA TV feed.
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