Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

Our solar system may ... the outskirts of the solar system is the activity within the Kuiper Belt, an unusual clustering of icy bodies -- including comets and dwarf planets -- which stretches ...

including planets, their moons, and asteroids that are held in orbit around the sun by its gravitational pull on them. ESS1.B: Earth and the Solar System (9-12) The solar system appears to have formed ...

“The solar system would officially have nine planets again ... referred to as Planet 9 or Planet X, even farther out in the solar system. Those researchers also proposed Planet 9 as a ...

1 of 9 This digital collage brings together our solar system and points beyond in one view. Illustration by NASA/JPL Too small to be called planets, asteroids are rocky chunks that also orbit our ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Our solar system ...

Although most stars are much larger than planets, there are some planets that boast impressive size as well. Jupiter is the biggest planet in our solar system ... a radius 6.9 times that of ...