During the first six missions, the X-37B spent more than 3,774 days in orbit. It launched on its current mission, OTV-7, on ...

After working to improve the booster design and creating new management practices to improve safety, NASA relaunched shuttle flights on Sept. 29, 1988, when Discovery lifted off from the space center.

After working to improve the booster design and creating new management practices to improve safety, NASA relaunched shuttle flights on Sept. 29, 1988, when Discovery lifted off from the space center.

I address you here this afternoon at 11:40 a.m. This morning Space program experienced a national tragedy with the explosion of the space shuttle Challenger ... 28.With one flight behind them ...

Updated [hour]:[minute] [AMPM] [timezone], [monthFull] [day], [year] William Ray Lucas, who led the NASA facility that shouldered much of the blame for the 1986 explosion of the space shuttle ...

On January 28, 1986, the NASA shuttle orbiter mission STS-51-L and the tenth flight of Space Shuttle Challenger (OV-99) broke apart 73 seconds into its flight, killing all seven crew members ...