Meaning Of The Word Oort cloud

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Oort cloud Meaning

Oort cloud Definition
Oort cloud Definition

What's The Definition Of Oort cloud?

Oort cloud in American English
a moving mass of icy cosmic debris thought to exist in the vast region beyond Pluto and to be the source of the comets that orbit the sun
noun: a region of the solar system far beyond the orbit of Pluto in which billions of comets move in nearly circular orbits unless one is pulled into a highly eccentric elliptical orbit by a passing star

Oort cloud in British English
noun: a mass of comets orbiting the sun far beyond the orbit of Pluto, whose existence was first proposed by Jan Hendrick Oort (1900–92) in 1950

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