Discovery Alert: An Earth-sized World and Its Ultra-cool Star
4 min read Discovery Alert: An Earth-sized World and Its Ultra-cool Star An artist’s concept of the exoplanet SPECULOOS-3 b orbiting its red dwarf star. The planet is as big around as Earth, while its star is slightly bigger than Jupiter – but much more massive. Credit: NASA/JPL-Caltech Our galaxy is a jewel box [...]