Astronomers have discovered four worlds unlike anything in our own solar system that provide a "missing link" between Earth twins and Neptune-like planets, they say. Scientists are interested in mini ...

The European Space Agency (ESA)’s CHEOPS satellite has discovered four new exoplanets — and they are a hard-to-detect type called a mini-Neptune. These planets are notable because they are the ...

Exoplanets come in shapes and sizes that are not found in our solar system. These include small gaseous planets called mini-Neptunes and rocky planets several times Earth’s mass called super-Earths.

"We want to comprehend the behaviors of these planets, given that those slightly larger than Earth and smaller than Neptune are the most common in the galaxy." When you purchase through links on our ...

Of all the potential super-Earths—terrestrial exoplanets more massive than Earth—out there, an exoplanet orbiting a star only 40 light-years away from us in the constellation Cetus might be the most ...

Exoplanet K2-18b is garnering a lot of attention. James Webb Space Telescope spectroscopy shows it has carbon and methane in its atmosphere. Those results, along with other observations, suggest the ...

A four-planet system observed several years ago by the Kepler spacecraft is actually a rarity: Its planets, all miniature Neptunes nestled close to the star, are orbiting in a unique resonance that ...

Astronomers are closing in on what looks like a colossal missing piece of the Solar System, a giant planet that appears to ...

Artist depiction of the mini-Neptune K2-18 b. Credit: NASA, CSA, ESA, J. Olmstead (STScI), N. Madhusudhan. Credit: Cambridge University Exoplanet K2-18b is garnering a lot of attention. James Webb ...