A mere 48 light-years from Earth in the constellation Ophiuchus is an exoplanet that has been defying scientists attempts to understand it.

A super-Earth named GJ 1214 b is believed to be made entirely out of water: a water mantle over a water core. Another, named PSR J1719-1438 b, is believed to be made entirely out of crystal diamond.

Enaiposha (GJ 1214 b) isn’t a mini-Neptune—it’s a scorching, haze-filled world with a dense, metal-rich atmosphere unlike anything seen before. Scientists thought Enaiposha was a typical min ...