A mesmerizing cosmic enigma, K2-18b, orbits a red dwarf star a staggering 124 light-years away. This enigmatic exoplanet, initially spotted by the Kepler space telescope, defies categorization, straddling the line between a gaseous Neptune-like world and a potentially rocky, Earth-sized planet. With a mass eight times that of Earth and a diameter two and a half times larger, … [Read more...] about K2-18b: A Water World on the Brink of Discovery