Summary
- A rare exoplanet smaller than Earth has been discovered orbiting Barnard’s Star, one of the closest stars to the Sun
- The planet, Barnard b, is not in the habitable zone as its surface is too hot for liquid water
- Despite being smaller than Earth and close to its star, Barnard b’s surface temperature is sizzling at 125 degrees Celsius
- This discovery adds to the growing number of low-mass planets found outside our Solar System