Add Yahoo as a preferred source to see more of our stories on Google. General Atomics Electromagnetic Systems (GA-EMS) just hit a massive milestone that could alter the future of space exploration.

Here’s what you’ll learn when you read this story: While chemical rockets penned the opening pages of the story of human spaceflight, countries around the world are eager to start a new chapter: ...

Human crews headed for Mars are still looking at journeys that last most of a year, long enough for radiation, boredom and mechanical risk to pile up. Nuclear propulsion promises to compress that ...

Israel has struck suspected chemical weapons sites and long-range rockets in Syria in order to prevent them from falling into the hands of hostile actors, the foreign minister said Monday. Syrian ...

Chemical engines put the first satellite into space, the first man on the Moon, and have sent the first deep space probes hurtling out of our solar system. However, chemical rockets have reached the ...

Most space missions rely on chemical rockets for propulsion. Rockets must carry fuel, which increases spacecraft mass and limits their speed and travel distance. For decades, researchers have explored ...

A growing body of peer-reviewed research shows that rocket launches and satellite reentries are depositing pollutants directly into the stratosphere, where they threaten to slow the recovery of ...

Israel’s foreign minister says it has struck suspected chemical weapons sites and long-range rockets in Syria in order to prevent them from falling into the hands of hostile actors. JERUSALEM — Israel ...