How big is the biggest planet in the universe?

1 Answer
Dec 23, 2015

Take all the other planets, dwarf planets, asteroids, moons and comets in the solar system and put them together and Jupiter is about twice that size.


Jupiter is so big that it actually radiates heat. Although it would need to be about 3 times bigger than it is to be the size of the smallest red dwarf, it is generating more heat than it receives from the sun.

The largest known planet ever discovered in the Universe is 70% bigger than Jupiter.