Planets, stars, galaxies, and the universe are so unwaveringly massive that puzzling out how much they weigh feels impossible. Yet, astronomers and physicists have been doing so for centuries ...

And yet, that’s just a tiny speck in the entire Universe.The Solar System, with all its planets and dwarf planets, seems vast in comparison to the Earth’s size, but it is only a small part of ...

Although most stars are much larger than planets, there are some planets that boast impressive size as well. What is the biggest planet in our solar system?

Jupiter is the biggest planet in our solar system, according to NASA. Jupiter’s radius is over 11 times the equatorial radius of the Earth.

Those proportions are kept honest in the scale model, in which an Earth that's only the size of a small marble calls for a solar system that's 7 miles wide. In this solar system, Jupiter is about the ...