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Our solar system is racing through a vast, invisible structure carved by ancient explosions. This video maps our journey ...

The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently, a group of researchers discovered that the inner portion of the Oort cloud likely has spiral arms ...

Far beyond Neptune, astronomers have finally confirmed a compact clump of icy worlds hiding inside the Kuiper Belt, a feature they are now calling an inner “kernel.” The tightly packed structure, ...

If you travel far enough away from the Sun, the Solar System becomes a lot more populated. Out past the orbit of Neptune lies the Kuiper Belt, a vast, ring-shaped field of icy rocks. This is where ...

Gravity is the force that governs the structure and motion of the solar system, keeping celestial bodies together in a cosmic dance. The sun, with its immense mass, generates the strongest ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

Add Yahoo as a preferred source to see more of our stories on Google. The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system, serving ...