galactic halo — noun (astronomy) An aggregation of stars, globular clusters, dust and gas surrounding a galaxy • • • Main Entry: ↑galaxy … Useful english dictionary
galactic halo — In astronomy, a nearly spherical volume of thinly scattered stars, globular clusters, and tenuous gas observed surrounding spiral galaxies. It may extend far beyond the disk and contain most of the galaxy s mass. The halo of the Milky Way Galaxy… … Universalium
Halo — may refer to: *Halo (religious iconography), a ring of light that surrounds an object in religious iconography *Halo (optical phenomenon), a ring of light that surrounds an object *Halo (medicine), used to immobilize cervical neck (spinal)… … Wikipedia
Galactic corona — The terms galactic corona and gaseous corona have been used in the first decade of the twenty first century to describe a hot, ionised, gaseous component in the Galactic halo of the Milky Way. A similar body of very hot and tenuous gas in the… … Wikipedia
Galactic tide — A galactic tide is a tidal force subjected on objects by the gravitational field of a galaxy such as the Milky Way. Particular areas of interest concerning galactic tides include galactic collisions, the disruption of dwarf or satellite galaxies … Wikipedia
Halo (Astronomie) — Der Halo (von griechisch hálos »Lichthof«) einer Galaxie ist ein annähernd kugelförmiger Bereich, der größer ist als die Galaxie selber und in dessen Zentrum sie eingebettet ist. Im Halo befinden sich Kugelsternhaufen und wenige, meistens… … Deutsch Wikipedia
Galactic coordinate system — Artist s depiction of the Milky Way galaxy, showing the galactic longitude relative to the sun. The galactic coordinate system (GCS) is a celestial coordinate system which is centered on the Sun and is aligned with the apparent center of the… … Wikipedia
galactic — /geuh lak tik/, adj. 1. Astron. a. of or pertaining to a galaxy. b. of or pertaining to the Milky Way. 2. immense; huge; vast: a problem of galactic proportions. 3. Physiol. pertaining to or stimulating the secretion of milk. [1830 40; < Gk… … Universalium
Galactic astronomy — is the study of our own Milky Way galaxy and all its contents. This is in contrast to extragalactic astronomy, which is the study of everything outside our galaxy, including all other galaxies.Galactic astronomy is that branch of astronomy which… … Wikipedia
Galactic empire — Galactic empires are a common theme in science fiction. Many authors have either used a galaxy spanning empire as background, or written about the growth or decline of such an empire. The capital of a galactic empire is frequently a core world or … Wikipedia
