Venus and Saturn are due up for a visually striking event known as a planetary conjunction. Here's everything to know about ...

How many Earths could fit inside the planets of our solar system.

Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

A small, round piece of asteroid Ryugu (sample #91), called “S-lunar,” contains tiny particles (less than 1 mm) that will allow planetary scientists to study the magnetic signature of the early solar ...

Venus and Saturn will appear close together in the night sky Sunday, March 8. Here's how to see the conjunction from around ...

Thousands of planets have been discovered orbiting distant stars, but only a small fraction appear potentially habitable. Scientists evaluate these worlds based on factors such as size, temperature, ...

The ESA's Mars Express and ExoMars Trace Gas Orbiter spacecraft watched as a superstorm that ravaged Earth also struck the Red Planet.

Scientists have captured the most complete, high-resolution map of the cold gas at the center of the Milky Way, which contains the raw material from which stars and planets are made. Information from ...

Venus and Saturn will appear close together in the night sky Sunday, March 8. Here's how to see the conjunction from around ...

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from the a European Space Agency orbiter on its ...

Beyond that, in the decades to come, we might be able to see the colours of an exoplanet’s surface, and determine if plant life might be present there. And then we can search for changes in a planet’s ...

Hundreds of people who love the little planet that was dissed, gather every year in the Arizona town where Pluto was discovered. They celebrate scientific discovery, history and our solar system’s ...