NASA tested a Space Launch System rocket RS-25 engine at the Stennis Space Center. Credit: NASA Stennis Space Center ...

Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

Top appropriators in both parties have signaled disagreement with Trump’s proposals for deep cuts and indirect cost caps.

In a further indication of Congress' position on the SLS and Orion programs, lawmakers set aside more than $4 billion for the ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical ...

AS NASA moves towards looming budget cuts, the agency still lacks a permanent leader. Here's why the search for administrator ...

Dr. John Blevins, Chief Engineer for NASA’s Space Launch System, was awarded the Samuel J. Heyman Service to America Medal, ...

House appropriators want NASA to examine alternatives to a new upper stage for the Space Launch System despite an uncertain long-term future for it.

You might not know is that fifty-five years later, Utahns are paving the way for a return back to the moon with ingenuity and ...

Marshall Space Flight Center will continue to lead in space transportation and propulsion systems, large space structures, scientific research and technology development that will drive NASA’s ...

Draconian budget and staff cuts could mean another Challenger disaster, warn current and former NASA employees.