In theory, water-based propulsion systems are a low-cost, safer alternative to conventional engines. Water is easier to handle and transport and doesn’t carry the same risks as toxic propellants. The ...

NASA’s Parker Solar Probe has spent the past year repeatedly diving into the sun’s outer atmosphere at speeds no human-made ...

A byproduct of aging nuclear weapons stockpiles could help power spacecraft on missions lasting decades. Americium-241, an ...

When agencies and operators prepare early, disruptions are shorter and less costly. Utilities and dispatch centers benefit from rehearsed fallback plans. Solar outbursts will continue, but clearer ...

The arrival of 3I/ATLAS in our solar system spawned multiple proposals for a rendezvous mission to study it up close. As the third interstellar object (ISO) ever detected, the wealth of information ...

Close-up measurements from NASA’s Parker Solar Probe are giving scientists an unprecedented look at how the solar wind gains ...

KENNEDY SPACE CENTER — SpaceX’s Falcon 9 rocket pierced the Wednesday morning sky as it launched three spacecraft from NASA and NOAA that will study the solar system’s “bubble,” collect information on ...

Sending a mission to the solar gravitational lens (SGL) is the most effective way of actually directly imaging a potentially ...

Plasma propulsion transforms an inert propellant – often hydrogen – into plasma, a superheated mix of ions and electrons.

Every once in a while, the outer solar system reminds us that we've only discovered a negligible portion of it, and that the vast majority is still full of surprises. The latest example of this is a ...

HELSINKI — China has published coordinated papers outlining dual missions to the solar system’s edge, suggesting the long-studied project is nearing formal approval. A lead paper on the design and key ...