Video: Former shuttle engine test-fired

Weeks after leaving its factory in New Orleans, the core stage for NASA’s first Space Launch System flight has been raised into a test stand at the Stennis Space Center to begin a series of checkouts culminating in an eight-minute engine-firing later this year.

John Grunsfeld, Associate Administrator for the Science Mission Directorate at NASA Headquarters, speaks about the EFT-1 test flight and science opportunities made possible by the Orion capsule and its Space Launch System rocket.

A troublesome liquid oxygen valve on the Space Launch System’s first flight-rated core stage will keep NASA from performing a second test-firing of the rocket’s four main engines this week.