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 ...

But others would have ended up with orbits like those of the long-period comets. An illustration of the solar system and the Oort Cloud. The numbers on the graph depict AUs, or astronomical units.

The spherical shell known as the Oort Cloud is, for all practical purposes, invisible. Its constituent particles are spread so thinly, and so far from the light of any star, including the Sun ...

The spherical shell known as the Oort Cloud is, for all practical purposes, invisible. Its constituent particles are spread so thinly, and so far from the light of any star, including the Sun ...

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 Oort Cloud comet — also known as the Tsuchinshan-ATLAS — will be lighting up the sky starting Oct. 9 Athena Sobhan is a Digital News Writer at PEOPLE since 2024. Her work has previously ...

(THE CONVERSATION) 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.