TESS Finds Lightweight Mars-sized World

NASA’s TESS spacecraft finds a Mars-sized exoplanet, GJ 367b, orbiting in just 8 hours and mostly made of an iron-nickel core.

IMAGE: An illustration of a red dwarf star orbited by an exoplanet. CREDIT: NASA/ESA/G. Bacon (STScI)

NASA’s TESS mission continues to find the strange and different when it comes to exoplanets. A new paper was published in Science this week that details the discovery of a planet about…