Astrophysicists have modeled the evolution of the putative planet in the outer solar system. They estimate that the object has a present-day radius equal to 3.7 Earth radii and a …read more
Source:: Science
Astrophysicists have modeled the evolution of the putative planet in the outer solar system. They estimate that the object has a present-day radius equal to 3.7 Earth radii and a …read more
Source:: Science