Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have spotted an Earth-sized planet orbiting LHS 1815, a star in the thick disk of our Milky Way Galaxy. An artist’s impression of the Earth-sized exoplanet LHS 1815b and its host star. Image credit: Sci-News.com. Current theories postulate that the Milky Way Galaxy is made up of several components: a thin disk, a thick disk, a halo and a bulge. Solar neighborhood stars are mostly...