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

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 ...

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

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