So in fact, the most massive brown dwarf might be smaller than the largest planet in our solar system. Robert Lea is a science journalist in the U.K. who specializes in science, space, physics ...

The four largest moons of Jupiter called Io ... can still accelerate some of those objects toward the inner planets, too, so it's a mixed blessing. Could there be life on Jupiter?

Experience a groundbreaking achievement, scientists have discovered the largest planet ever found in the universe, a discovery that has sent shockwaves through the astronomical community. This massive ...

As the most massive planet in the Solar System, and first to form, Jupiter’s gravity shaped the formation of everything else.

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

"This is the 5th largest planet in our solar system ... he and other researchers have been trying to prove that the so-called "Planet 9" exists. So far, the only evidence has come from some ...

Saturn is less dense than water, so it could float in a (very large ... With 274 confirmed moons, it has more than all of the other planets combined. Its largest moon, Titan, is the second ...