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

Add Yahoo as a preferred source to see more of our stories on Google. An artist's concept shows Voyager 1 entering interstellar space, or the space between stars. - NASA/JPL-Caltech Voyager 1, NASA’s ...

Deep space probes and frontline soldiers share a basic problem: once they leave the grid, every watt has to be carried in.

It was race against time as NASA engineers recently raced to fix a thruster problem aboard the vintage Voyager 1 deep space probe. It's hard enough to repair a craft at the edge of the solar system, ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary. Tom has a master’s degree in ...

Voyager 1, NASA's deep-space probe, could soon become the first spacecraft to reach a historic milestone. In November 2026, the probe will be one light-day from Earth. Launched in 1977, Voyager 1 is ...

As it heads out of the solar system never to return, the deep space probe Voyager 1 is headed for yet another cosmic milestone. In late 2026, it will become the first spacecraft to travel so far that ...

(CNN) — Voyager 1, NASA’s deep-space probe, could soon become the first spacecraft to reach a historic milestone. In November 2026, the probe will be one light-day from Earth. Launched in 1977, ...