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

SpaceX launched twin satellites for NASA Wednesday that will study how the electrically-charged solar wind interacts with Earth's magnetic field, creating constantly changing and occasionally ...

The United Arab Emirates announced on Tuesday that it would extend its Mars probe mission, now in its fifth year, for an additional three, underlining the oil-rich state's space ambitions.

Add Yahoo as a preferred source to see more of our stories on Google. For nearly five decades, NASA's twin Voyager probes have plumbed the cosmos in search of answers to some of astronomy's most ...

China has launched a space probe that will travel to an asteroid near Mars to collect samples and find potential "groundbreaking" results. The Tianwen-2 probe launched Thursday from the Xichang ...

The small rocket and capsule have been flying since April 2015 and have combined to make 38 launches, all but one of which ...

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 ...

A pair of space probes cruising the solar system may be able to pass through the tail of the mysterious Manhattan-sized comet hurtling towards Earth — but only if the scientists operating them act ...

In 1949, famed mathematician and physicist John von Neumann delivered a series of addresses at the University of Illinois, where he introduced the concept of the "universal constructor." The theory ...

Since the 1950s, humanity has been searching for extraterrestrial life with increasingly sophisticated tools. But after decades of space probes, meteorite analysis, radio telescopes, and UFO ...