How you can help astronomers hunt for undiscovered worlds

Astronomers discovered the stars closest to our Solar System more than 100 years ago. There’s the three-star Alpha Centauri system about four light-years away and Barnard’s star about six light-years out. But our celestial neck of the woods might be more crowded than we ever thought possible.

Continue Reading . . . https://www.theverge.com/science/22254948/planet-9-discovery-brown-dwarf-nasa-solar-system-astronomy