NASA’s push for a new nuclear rocket engine is not just another upgrade to the hardware we strap to the bottom of spacecraft.

Reaching Alpha Centauri within a single human lifetime has long sounded like science fiction, yet a new generation of nuclear ...

We’ve been talking about going to Mars for decades, but we haven’t yet cracked how to get people there and back safely and in a reasonable amount of time. The problem is one of distance and the ...

The long, winding road for Franklin Chang-Diaz's plasma rocket engine takes another turn. See full article ...