Earth-sized planet discovered orbiting ultra-cool red dwarf star
An international team of astronomers has detected a new Earth-sized planet orbiting an ultra-cool red dwarf star, located 55 light years away. The planet, named SPECULOOS-3 b, is the second of its kind discovered around this type of star. It completes an orbit of the star in about 17 hours. The star is more than twice as cold as our sun and significantly less massive and luminous. SP