space

Astrophysicists estimate that any exponentially growing technological civilization has only 1,000 years until its planet will be too hot to support life.

60-year-old Oleg Kononenko has safely returned to Earth following a record-breaking year-long stint onboard the International Space Station. His latest trip to space means he has now spent more time in orbit than any other human.

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.

A composite image of an annular solar eclipse showing Baily's Beads won top prize at the 2024 Astronomy Photographer of the Year contest.

NASA astronauts Butch Wilmore and Sunita Williams will not return to Earth on the troubled Boeing Starliner spacecraft. Instead, NASA will bring them home in February 2025 aboard a SpaceX vehicle, while Starliner falls to Earth uncrewed.

A tiny fraction of known black holes emit X-ray signals that resemble a human "heartbeat." Now, new research may finally explain the strange phenomenon.

Auroras may once again be visible in northern parts of the U.S. this weekend as Earth braces for impact from a powerful coronal mass ejection.

What is the solar system's coldest spot and how does the coldest place on Earth compare?

Earth was hit by a "severe" G4-class geomagnetic storm on Monday morning, increasing the chances of auroras in the northern U.S. tonight.

The Hubble Space Telescope zooms in on a dense ball of millions of stars within a galaxy orbiting the Milky Way. Its ancient origins raise big questions about how galaxies form and grow.