Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

For more than 20 years, the European Space Agency's (ESA) Mars Express orbiter has been imaging the surface of the Red Planet. One region, in particular, continues to fascinate the Mars Express team, ...

A European-Japanese space mission will reach Mercury in 2026, carrying instruments designed to answer a question that has ...

Astronomers from the Massachusetts Institute of Technology (MIT) have made an unusual discovery, finding a planet which is in the process of disintegrating. And as it decays, it is leaving behind a ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.