204
NASA Successfully Tests Revolutionary Rocket That Could Get Us to Mars Faster
(www.sciencealert.com)
Share & discuss informative content on: Astrophysics, Cosmology, Space Exploration, Planetary Science and Astrobiology.
The Busy Center of the Lagoon Nebula
π Science
π Engineering
π Art and Photography
Other Cool Links
Oh man RDREs are so cool! the other commenter explained it better than I ever could but also here are some great videos about it for further fun!
ETA: I forgot the coolest one! NASAβs own test video