Comet C/2025 V1 (Borisov), discovered by an amateur astronomer, is captivating scientists. Its unusual orbit initially ...

Here, we show that the detection of Borisov implies that interstellar objects outnumber Solar system objects in the Oort cloud, whereas the reverse is true near the Sun due to the stronger ...

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 Milky Way," a show at New York City's Hayden Planetarium that spawned ...

A newly discovered comet named C/2025 V1, which some have compared to 3I/ATLAS, is due to make its closest approach to Earth on Tuesday, Nov. 11.

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 ...

Dive into the farthest reaches of the solar system and explore the Oort cloud a vast icy sphere that may hold trillions of small worlds. Discover why long-period comets are cosmic time capsules ...

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 ...

Astronomers have identified a small but significant possibility that a Neptune-sized planet is quietly orbiting within the distant Oort cloud, the icy boundary of our solar system. According to recent ...

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 ...

Comet C/2022 E3 (ZTF), which is set to make a close approach to the Earth on Wednesday, may have originated in a mysterious cloud at the edge of the solar system. The comet, which may be faintly ...

For over a century, researchers have been puzzled by strange gravitational forces seemingly pulling on the orbits of Neptune and Uranus in the distant reaches of our solar system. While some have ...