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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.

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.

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 ...

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.

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.

It would take 120 years to travel to planet K2-18b at the speed of light. Here's how we know what could lie there.

An alien planet has been discovered that may be "teeming with life" as scientists reveal the exact date we will know whether extraterrestrials exist could be "within one to two years". Lead ...

Could alien life thrive on K2-18b? What to know about the distant exoplanet A strong possibility exists that extraterrestrial life can be found on a planet known as K2-18b located 120 light-years ...

In 1990, Voyager 1 captured the most distant portrait of our planet ever taken, revealing that from beyond Pluto's orbit, Earth appears as nothing more than a "pale blue dot."In a new study ...

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.