An article accepted for publication in “The Astrophysical Journal Letters” reports the discovery of the exoplanet TOI 700 e. A team of researchers used observations conducted with NASA’s TESS space telescope and confirmed with other instruments to find it. It’s the fourth planet discovered in the TOI 700 red dwarf system and is interesting because it’s a rocky planet a bit smaller than Earth. Its habitability potential is yet to be assessed because it’s within the so-called optimistic habitable zone, where a planet can only have liquid water on its surface for part of its history.