Physicists are quietly rewriting the rulebook for how we might cross the gulf between stars, not by bolting bigger rockets to ...

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

China is fast-tracking potential space-travel technology designed to simulate speeds of Mach 30, a paradigm changing velocity more than five times the speed of the hypersonic threshold considered to ...

Ramesh Nathan told investors his Bay Area spacecraft company had seven offices around the world, employed more than 15,000 people, and generated $30 billion in profit in a single quarter. But, ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Every year, companies and space agencies launch ...

For over a century, rocket propulsion has followed a simple principle; burn fuel, expel it backward, and Newton's third law pushes you forward. Since Konstantin Tsiolkovsky first formulated the rocket ...