Portal’s heat exchanger thruster, known as Flare, fires up during a test in a vacuum chamber. (Portal Space Systems Photo) Bothell, Wash.-based Portal Space Systems says it has successfully tested its ...

From plasma engines that could turn months of travel into weeks to the first blueprints for ships that will outlive their ...

The latest hot-fire of NASA’s Artemis moon rocket engine at Stennis Space Center was more than a dramatic plume on the Mississippi horizon, it was a proof point that the agency’s heavy-lift strategy ...

Historically, getting into space and sending heavy payloads across or out of the Solar System has relied on chemical rockets. They do the job, and very well, but they suffer from the fact that even ...

"Solar Orbiter can now provide this missing piece of the puzzle." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In a striking new view from ...

Why outer space systems need high power density. Why power-generation systems in outer space are important. Generating electricity at nighttime using renewable resources has become extremely important ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

NASA’s Goddard Space Flight Center shared the images of comet 3I/ATLAS. It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to ...

While its star projector leaves a lot to be desired, the Science Can Solar System Planetary Projector is a fantastic educational tool for kids, with its solar system model, complete with talking ...

Engineers have built a modern Stirling engine that quietly turns the cold of outer space into steady mechanical power, using the night sky as a heat sink instead of a fuel tank. By radiating heat away ...