Gliese 3090 b is a sub-Neptune, a type of planet larger than Earth but smaller than Neptune, orbiting its host star in a tight, short-period orbit. This planet is currently losing its atmosphere into space through a process known as photoevaporation,...

The exoplanet KELT-9 b is an extremely hot gas giant where temperatures reach 4,000 Kelvin. Because it is so hot, traditional methods for studying its atmosphere using molecules like water or carbon dioxide are difficult, as these compounds break apa...