Hubble classification system
Hubble classification system
A system developed by Edwin Hubble in 1936 that classifies galaxies as elliptical, spiral, barred spiral, lenticular, and irregular. Hubble speculated that galaxies might fit into an evolutionary sequence from earlier elliptical galaxies to later spiral forms, but most astronomers no longer believe this is the case. Our galaxy, the Milky Way, is a spiral galaxy. Also called Hubble sequence.
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noun, Aerospace. 1. . noun 1. U.S. Aerospace. a 7.9-foot (2.4-meter) optical telescope designed for use in orbit around the earth. Hubble Space Telescope (HST) The first permanent astronomical observatory above the Earth’s atmosphere, HST was designed to provide much more detailed views of the universe than can be obtained from the ground. Since its […]
- Hubble telescope
noun 1. a telescope launched into orbit around the earth in 1990 to provide information about the universe in the visible, infrared, and ultraviolet ranges Also called Hubble space telescope
- Hubbly
[huhb-lee] /ˈhʌb li/ adjective 1. of uneven surface; rough: hubbly ice; a hubbly road.
- Hubbub
[huhb-uhb] /ˈhʌb ʌb/ noun 1. a loud, confused noise, as of many voices: There was quite a hubbub in the auditorium after the announcement. 2. tumult; uproar. /ˈhʌbʌb/ noun 1. a confused noise of many voices 2. uproar n. 1550s, whobub “confused noise,” generally believed to be of Irish origin, perhaps from Gaelic ub!, expression […]
- Hub-bub
[huhb-uhb] /ˈhʌb ʌb/ noun 1. a loud, confused noise, as of many voices: There was quite a hubbub in the auditorium after the announcement. 2. tumult; uproar. /ˈhʌbʌb/ noun 1. a confused noise of many voices 2. uproar n. see hubbub. n. 1550s, whobub “confused noise,” generally believed to be of Irish origin, perhaps from […]