The countdown to launch will begin around 50 hours prior to the launch.

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, ...