NASA's first SLS rocket launch faces delay until 2020
This mission, known as Exploration Mission-1 (EM-1) is a critical flight test for the agency's human deep space exploration goals.
Nov 09, 2017, 15:41 PM IST
This mission, known as Exploration Mission-1 (EM-1) is a critical flight test for the agency's human deep space exploration goals.
Nov 09, 2017, 15:41 PM IST