Three teams of astronomers have been fascinated by an alien world known as K2-18b. But what's all the fuss about? In September, two teams announced that they had found signs of liquid water in the ...

In a major first, scientists have detected water vapor and possibly even liquid water clouds on a strange exoplanet that lies in the habitable zone of its host star about 110 light-years from Earth.

Scientists have discovered a new type of alien planet -- a steamy waterworld that is larger than Earth but smaller than Uranus. The standard-bearer for this new class of exoplanet is called GJ ...

Water is ‘common’ on alien worlds, scientists say in finding that could transform search for extraterrestrial life. Water is thought to be a key component to live anywhere in the universe ...

NASA's James Webb Space Telescope (JWST) has found water swirling in the air of a distant alien planet, a new study reports. That exotic world is TOI-421 b, a boiling-hot "sub-Neptune" orbiting a ...

Earth" that is located about 154 light-years away and is nearly twice as big and four times as massive as our planet.

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.

Mars just scored another point in favor of alien life. Scientists discovered signs of an ocean's worth of liquid water miles below Mars' surface. The findings, based on Marsquake measurements by ...

Signs of life on alien planet K2-18b? ... This artist's impression depicts what a water world with a hydrogen atmosphere, such as planet K2-18b, might look like. A. Smith, N ...

K2-18b is considered a Hycean exoplanet – as opposed to a rocky planet – due to its potential to possess a hydrogen-rich atmosphere and surface covered in ocean water.. Since it was discovered ...