The mysterious cloud of space rocks and debris at the edge of the solar system may have spiral arms, making it resemble a mini galaxy, a new study says. The Oort cloud is a theoretical debris shell at ...

The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system, serving as the final boundary between us and the dark reaches of interstellar ...

Initial analysis suggested the nucleus was approximately 13.7 kilometers wide (roughly city-sized); however, researchers believe this may have been an overestimate. It is likely a long-period comet ...

Add Yahoo as a preferred source to see more of our stories on Google. The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the ...

In 1.2 million years, the orange dwarf Gleisa 710 will pass through the outer reaches of our solar system, becoming a brilliant point in the night sky while nudging the distant Oort Cloud. Though ...

New research may shine a light on part of outer space's great mysteries: the Oort Cloud. The Oort Cloud is the name given to a theorized group of potentially trillions of icy objects on the edge of ...

A new planetarium show at the American Museum of Natural History depicts a spiral in the Oort Cloud, a region far beyond Pluto that’s full of icy comets. (American Museum of Natural History) NEW YORK ...

Our solar system may not be as isolated as we once thought. According to a new study, more than 1 million interstellar objects could be lurking in the outer reaches of our cosmic neighborhood, quietly ...

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 ...