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

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 ...

Long-distance space travel presents enormous challenges, from life support demands to psychological strain. Cryogenic sleep, ...

NASA should focus on the body and mind, not just engineering, for cosmic travel. Scott Solomon is a biologist and professor at Rice University and the author of “Becoming Martian: How Living in Space ...

When scientists first sent microscopic worms into orbit in 2018, they hoped to answer a question that has shaped every discussion about long missions. What really happens to your body when gravity no ...

EaglePicher Technologies, which has been a part of space exploration since its earliest days, is going back soon as part of the Artemis moon missions. “It’s exciting because we were there when NASA ...

Deep space is far away. Really far away, and getting there quickly with conventional chemical rockets is like trying to cross an ocean in a rowing boat, technically possible but painfully slow and ...