About Kepler-451 c
Kepler-451 c is a rare exoplanet. It lies about 1,292.7 light-years from Earth, shines at apparent magnitude 12.65, spans roughly 13.5 Earth radii and weighs about 511.7 Earth masses.
Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.