This illustration shows HD 189733b, a huge gas giant that orbits very close to its host star HD 189733. The planet's atmosphere is scorching with a temperature of over 1000 degrees Celsius, and it ...

Scientists have found a nearby planet that appears to be teeming with life, and now we may know what it looks like. The planet, known by astronomers as K2-18b, is potentially an ocean world.

Alien planets around certain stars or starless could have lakes like Saturn's moon Titan, scientists say. Like Titan's seas of liquid methane, such environments could potentially support alien life.

A puzzling alien planet is the closest thing to an Earth twin in size and composition known beyond our solar system, though it's far too hot to support life, scientists say.

Astronomers have created a detailed 'weather map' of WASP-43b, a 'hot Jupiter' some 260 light-years from Earth with supersonic winds and temperatures that would melt steel.

But the coolest thing about alien planets is that sometimes they’re just completely, bizarrely, wonderfully alien. Consider WASP-107b. The gas giant is a gloriously weird planet.

Alien planets around certain stars or starless could have lakes like Saturn's moon Titan, scientists say. Like Titan's seas of liquid methane, such environments could potentially support alien life.