As the closest planet to the Sun, Mercury is exposed to the star's enormous gravitational field. And it's really stressful.

On July 2, 1985, the European Space Agency launched the Giotto space probe to get a close-up look at Halley's Comet. Nearly ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ...

Pieces of Mercury may have been found on Earth, potentially allowing scientists to study the Solar System's innermost planet.

Although it doesn’t pass resolutions or make binding decisions, the IGF serves as a space for dialogue and collaboration.

The star HIP 67522 with a flare erupting toward an orbiting planet, HIP 67522 b, is depicted in this illustration released by ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

The flares may heat up and inflate the planet's atmosphere, which is dominated by hydrogen and helium. Being lashed by these ...

Astronomers have discovered over 100 new alien worlds so far this year — some many light-years away from Earth — that ...

Axiom Mission 4 (Ax-4), the fourth private astronaut mission to the ISS, is set to launch on June 25 after multiple delays.

The SpaceX Dragon spacecraft carrying the Axiom Mission 3 crew is pictured approaching the International Space Station on Jan ...

Va., filed a series of amendments Monday to the Republican-led budget package moving through Congress, arguing the legislation would slash essential services and disproportionately benefit the wealthy ...