Oort-cloud
[awrt, ohrt] /ɔrt, oʊrt/
noun, Astronomy.
1.
a region of the solar system far beyond the orbit of the dwarf planet in which billions of comets move in nearly circular orbits unless one is pulled into a highly eccentric elliptical orbit by a passing star.
Compare .
n.
in reference to the hypothetical cloud of small objects beyond Pluto that become comets, proposed 1949 by Dutch astronomer Jan Hendrick Oort (1900-1992), and named for him by 1968.
Oort cloud
(ôrt)
A sphere-shaped mass of more than 100 billion comets that makes up the outer edge of the solar system, surrounding the Kuiper belt and the planets. Some comets from this area are drawn into the inner solar system by passing stars and other forces and take more than 200 years to make one complete orbit of the Sun. Compare Kuiper belt.
Read Also:
- Oory
[oo r-ee] /ˈʊər i/ adjective, Scot. 1. . [oo r-ee] /ˈʊər i/ adjective, Scot. 1. shabby; dingy. 2. melancholy; languid.
- Oos
[oh-oh] /ˈoʊ oʊ/ noun, plural o-os. 1. any of several species of Hawaiian honey eaters of the genus Moho, especially the extinct M. nobilis, of the island of Hawaii, that had black plumage and two tufts of yellow plumes used to make ceremonial robes for the Hawaiian kings. out of service
- Oosd
Object-oriented structured design: a design method elaborated from structured design and incorporating the essential features of the object-oriented approach.
- Oose
/uːs/ noun 1. (Scot, dialect) dust; fluff
- Oosperm
/ˈəʊəˌspɜːm/ noun 1. a fertilized ovum; zygote