New Mini-Neptune Exoplanet Discovered by Astronomers

Astronomers have discovered a new mini-Neptune exoplanet, TOI-2018 b, orbiting a nearby star using NASA's TESS. The planet is about two times larger and nine times more massive than Earth and has a radius of about 2.27 Earth radii. It orbits its host star every 7.44 days and its equilibrium temperature is estimated to be 652 K. The researchers suggest that TOI-2018 b may be a planetary core that failed to undergo run-away accretion.