As they explain, planets sized between Earth and Neptune are relatively common in the universe. These planets, absent in the ...

Researchers discovered mini-Neptunes around four red dwarfs using observations from a global network of ground-based ...

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Aug. 31, 2023 — A Neptune-sized planet denser than steel has been discovered by an international team of astronomers, who believe its composition could be the result of a giant planetary ...

It is likely to be habitable. Scientists first thought the planet, called LHS-1140b, was a mini-Neptune spinning a thick mixture of water, methane and ammonia. But new data from the James Webb ...

Originally, scientists classified LHS 1140 b as a "mini-Neptune," a small gas giant with an atmosphere too thick in hydrogen and helium to support life. However, recent observations from the James ...