A passing star has been discovered that could cause chaos in the Solar System, sending Earth flying out of orbit.

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

New research suggests that our entire solar system is vulnerable to being thrown into chaos by a distant star.

A number of high-profile missions would get the axe, including the New Horizons Pluto probe and Juno Jupiter orbiter.

A new study led by University of Wisconsin-Oshkosh geologist Timothy Paulsen and University of Colorado Boulder ...

A decade after the release of "The Martian" and a decade out from the world it envisions, how close is reality to fiction?

China’s Tianwen-2 mission has launched to explore an asteroid that may be a piece of the moon, as well as an active asteroid ...

Scientists have identified the most powerful solar storm ever recorded, an extreme event that struck Earth around 12,350 BC, ...

Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...