The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

What makes this exoplanet special is the possibility of it hosting a temperate water ocean, which is nearly half the size of the Atlantic Ocean. Scientists have been searching for habitability ...

Related: Cotton candy exoplanet is 2nd lightest planet ever found "V1298 Tau b is the size of Jupiter ... for this planet," Barat said. "A comparison between the nature and composition of V1298 ...