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.

Astronomers have spotted two mini-Neptune exoplanets that are losing their puffy atmospheres, in the process possibly transforming into super-Earths. Radiation from the planets' parent stars is ...

Now, astronomers have identified two different cases of “mini-Neptune” planets that are losing their puffy atmospheres and likely transforming into super-Earths.

Astronomers spotted four elusive mini-Neptune planets with the exoplanet-hunting telescope CHEOPS.

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.

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 ...

Astronomers have spotted two mini-Neptune planets which seem to be transforming into super-Earths as they lose their atmospheres (published in The Astronomical Journal).

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.

Do the Milky Way's most common planets, mini-Neptunes, have atmospheres filled with opaque clouds or a more transparent haze?

Now, astronomers have identified two different cases of "mini-Neptune" planets that are losing their puffy atmospheres and likely transforming into super-Earths. Radiation from the planets' stars ...

Astronomers have identified two different cases of 'mini-Neptune' planets that are losing their puffy atmospheres and likely transforming into super-Earths.