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oort cloud

 

Definitions from WordNet

Noun oort cloud has 1 sense
  1. Oort cloud - (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet's orbit and may send it tumbling toward the sun
    --1 is a kind of
    collection, aggregation, accumulation, assemblage

Definitions from the Web

Oort Cloud

The Oort Cloud is a hypothetical cloud of icy objects that is believed to surround the outermost regions of the solar system. It is named after the Dutch astronomer Jan Oort, who first proposed its existence in 1950.

Definitions

  1. Noun: A theoretical cloud of comets believed to encircle the Sun, roughly 50,000 astronomical units away.

Examples

  1. The existence of the Oort Cloud helps to explain the origin and distribution of long-period comets.
  2. Scientists study the Oort Cloud to gain insights into the formation and evolution of the solar system.

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Posters of the Oort Cloud

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