SPACE.com -- Tally it all up, and that's how much time space shuttle orbiters have spent in the air and in space during 99 flights to date

Mission Discovery:


	Tally it all up, and that's how much time space shuttle orbiters have spent in the air and in space during 99 flights to date By Todd Halvorson Cape Canaveral Bureau Chief posted: 10:51 am ET 03 October 2000

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Two years. Four months. Seven days.

Tally it all up, and thats how much time space shuttle orbiters have spent in the air and in space during 99 flights combined, to date.

And with a half-scale prototype of the shuttles supposed heir apparent mired in technical problems, it appears Columbia, Discovery, Atlantis and Endeavour will chalk up a lot more flying time in the years to come.

NASA officials, meanwhile, are quick to point out that the orbiters each of which were built to fly 100 missions still have a lot of design life ahead of them.

For those keeping track, heres a handy list of shuttle orbiter statistics to date:

Columbia: 26 missions. Time in flight: 273 days, 21 hours, 9 minutes, 26 seconds.
Discovery: 27 missions. Time in flight: 204 days, 7 hours, 55 minutes, 27 seconds.
Atlantis: 22 missions. Time in flight: 172 days, 13 hours, 50 minutes, 50 seconds.
Endeavour: 14 missions. Time in flight: 144 days, 9 hours, 46 minutes, 54 seconds.
Challenger: 10 missions. Time in flight: 62 days, 7 hours, 56 minutes, 22 seconds.

Fleet Totals: 99 missions. Time in flight: 857 days, 12 hours, 39 minutes, 13 seconds.

Note: Challenger and a crew of seven were lost January 28, 1986 when the orbiter broke up 73.6 seconds into flight because of a fuel tank explosion.