Discovery launched at 12:06 a.m . ET , according to the Johnson Space Center in Houston . The mission also will include three spacewalks . Endeavour lifted off from Kennedy Space Center early Monday . The two - day mission will include three spacewalks .
Discovery launched at 12:06 a.m . ET , according to the Johnson Space Center in Houston . Endeavour lifted off from Kennedy Space Center early Monday . The two - day mission will include three spacewalks .