Sierra Space officials announced the autonomous spacecraft successfully completed and passed testing milestones in ...

Corrections & Clarifications: An earlier version of this story misstated the date of the Space Shuttle ... had flown on a shuttle. Classrooms across America watched the launch.

I address you here this afternoon at 11:40 a.m. This morning Space program experienced ... explosion of the space shuttle Challenger. Approximately a minute, half after launch from here at the ...