A newly discovered distant mini-Neptune planet may possess its own atmosphere, ocean, or a combination of the two, even if they don't last for long.

Mini-Neptunes are smaller and farther from their stars, and thus harder to spot, than many other exoplanets.

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.

Planets such as GJ 1214b are often referred to as mini-Neptune planets because they're smaller than Neptune but with a similar atmospheric makeup.

A special exoplanet has been discovered in space, which sheds the label of ordinary, with features of a mini-Neptune and a super-Venus. Enaiposha, also known as GJ 1214 b, is a red dwarf star ...

A young planet named HIP 67522 causes violent eruptions on its star, dramatically accelerating the loss of its own atmosphere ...

Astronomers pointed the James Webb Space Telescope at a common kind of planet that's bigger than Earth but smaller than Neptune. What they saw wasn't what they expected.

Though they are thought to be the most common planet type in our galaxy, mini-Neptunes are rarely spotted because they are hard to detect.

Mini-Neptunes and super-Earths may have a lot more in common than just being superlatives. Four gaseous exoplanets, each a bit smaller than Neptune, seem to be evolving into super-Earths, rocky ...

A newly discovered distant mini-Neptune planet may possess its own atmosphere, ocean, or a combination of the two, even if they don't last for long.