The human mind may find it difficult to conceptualize: a cosmic cloud so colossal it surrounds the Sun and eight planets as it extends trillions of miles into deep space. The spherical shell known as ...

An ancient visitor from the far reaches of our solar system is making a once-in-a-lifetime appearance. The Oort Cloud Comet, ...

Mid-October should be our best chance to view a comet not expected back for another 80,000 years, experts say.

Nathan Kaib, co-author of the study and astronomer at the Planetary Science Institute, stated it is plausible for the Solar System to have captured an Oort Cloud planet. Kaib emphasized that ...

NASA has since ruled that it doesn’t exist. The Oort cloud is the Solar System's Terra Australis. It's a theoretical bubble of icy debris predicted by scientists to be the furthest part of our ...

Astronomers infer the Oort Cloud is there because it's the only logical explanation for the arrival of a certain class of comets that sporadically visit our solar system. The cloud, it turns out ...

Astronomers infer the Oort Cloud is there because it’s the only logical explanation for the arrival of a certain class of comets that sporadically visit our solar system. The cloud, it turns out ...

Astronomers infer the Oort Cloud is there because it's the only logical explanation for the arrival of a certain class of comets that sporadically visit our solar system. The cloud, it turns out ...