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.

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 ...

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 ...

NASA's James Webb Space Telescope (JWST) provided the first direct image of a planet with a mass similar to Saturn's, ...

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.

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 ...