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NASA set for Hubble mission

- Associated Press - Monday, May 11, 2009

CAPE CANAVERAL, Fla. | With a forecast of near-perfect weather, NASA's Hubble Space Telescope scientists and managers were euphoric as they awaited Monday's planned launch of shuttle Atlantis on the final trip to the orbiting observatory.

The anticipation was all the greater given years of mission delays.

"To be within one day of it is remarkable, unbelievable, and I have to persuade myself I'm not dreaming," senior project scientist David S. Leckrone said Sunday.

"But I walk outside, and I see that beautiful bird on the pad [Atlantis], and I see the gorgeous weather, and we're going to get off tomorrow, and it's going to go splendidly. I just feel it."

Earlier Sunday, meteorologists issued an improved forecast, putting the odds of good launching weather at 90 percent, about as good as it gets. Only a slight chance of rain is expected at the emergency landing site in Spain.

Atlantis is poised to blast off with seven astronauts just after 2 p.m.

The 19-year-old Hubble needs new batteries, gyroscopes, cameras and other equipment that NASA hopes will keep the telescope operating - at a higher-than-ever scientific level - for another five to 10 years.

Hubble has been left unattended for seven years. It's the longest gap ever between servicing missions, created in large part by the 2003 Columbia disaster. A telescope breakdown last fall led to the most recent seven-month delay.

"We have seven years of accumulated maintenance work to do," Hubble program manager Preston Burch said. "So you can imagine if you had a car, and you were driving it every day for seven years, and never took it into the shop. You would have quite a list of things to do on it."

The 11-day mission is packed, and includes unprecedented camera repairs. In all, five spacewalks are planned.

Because this is the final visit to Hubble, "we're going for broke," Mr. Leckrone told reporters.

This last repair mission was considered so dangerous in the wake of the Columbia accident that it was canceled in 2004. NASA reinstated the mission two years later after coming up with shuttle-repair techniques and an immediate rescue plan involving a second shuttle, the Endeavour.

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