K2-18b is a sub-Neptune with water vapour, methane, and possibly DMS in its atmosphere. It’s 124 light-years away, in the habitable zone of a red dwarf star. It might be a water world, a mini ...

K2-18b is also smaller than Neptune, making it what astronomers refers to as a "sub-Neptune" planet that, while not present in our solar system, is what NASA says is among "the most common type of ...

An international team of astronomers reports the discovery of a new super-Neptune exoplanet orbiting a solar-type star. The newly detected alien world, which received the designation TOI-5005 b ...

That makes TOI-421b a standout among so-called "sub-Neptunes," planets larger than Earth but smaller than Neptune. ... SEE ALSO: These scientists think alien life best explains what Webb just found.

Signs of life on alien planet K2-18b? ... The planet is smaller than Neptune but bigger than Earth, and belongs to a mysterious class of planets not found in our own solar system.

The space-based observatory has revolutionized the way we see space, and it can now add another remarkable accomplishment to ...

With the possibility of a mini-Neptune being mostly ruled out (though further observations and analysis will be needed to confirm this), Cadieux’s team turned to another possibility: a super-Earth.