Video: Delta 4-Heavy tower rollback

This video recaps the Orion spacecraft and its Delta 4-Heavy rocket preparations for launch on the Exploration Flight Test No. 1.

A senior NASA official said Tuesday that the Space Launch System, a huge heavy-lift rocket years behind schedule, could launch astronauts on a moon landing mission in 2024 on just its third flight to meet a goal announced last month by Vice President Mike Pence, while commercial companies will be entrusted with more responsibility to develop a lunar lander and a modest mini-space station, or Gateway, in lunar orbit.

A NASA authorization bill released by the House Science Committee Friday proposes major changes to the direction of the agency’s human spaceflight programs, with a goal to land crews on the moon by 2028, not the 2024 schedule set by the Trump administration.