The two-day countdown test at NASA’s Kennedy Space Center in Florida included filling up the tanks of the giant Space Launch System rocket with millions of pounds of liquid hydrogen and liquid oxygen.

CAPE CANAVERAL, Fla. (AP) — NASA ran into exasperating fuel leaks during a make-or-break test of its new moon rocket Monday, calling into question how soon astronauts could take off for a trip around ...

Add Yahoo as a preferred source to see more of our stories on Google. A critical rocket test that will help determine when NASA can launch its first human moon mission in more than five decades ...

Sriharikota: ISRO on Sunday commenced a 22.5-hour countdown for the launch of a PSLV rocket that will place an earth observation satellite along with 14 other co-passenger satellites into orbit, ...

The leaks — reminiscent of the rocket's delayed debut three years ago — sprang just a couple hours into the daylong fueling operation at Kennedy Space Center. Launch controllers began loading the ...