Two Planet 9 Candidates
by Brian Wang from NextBigFuture.com on (#6YRPV)
Astronomers believe there is a Planet Nine in the outer solar system beyond Neptune. A team led by Amos Chen from the National Tsing Hua University, is searching for Planet Nine's heat signature. When you double the distance from the sun, reflected light becomes 16 times fainter. This is an inverse fourth-power relationship. But thermal ...