They’re not a perfect match, but it’s way too hot on the first planet for us to hop over and confirm for ourselves.

Mount Everest may be the tallest mountain on Earth, but it's nothing compared to the towering giants scattered across our ...

Pebble-sized building blocks of planets have been found around two young stars, offering a glimpse into how solar systems ...

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

Interstellar comets offer the tantalizing opportunity for us to touch something truly otherworldly,” says the European Space ...

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

For folks in the United States, July evenings mean 4th of July fireworks. While you're waiting for the show, be sure to watch ...

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.

A couple of meteorite samples currently being investigated could be the first pieces of Mercury on Earth. Ben Rider-Stokes, a ...

The sun rises from the east, and sets in the west - this is a well-established fact for the longest time, and this is due to ...

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...