Galactic Centre
Galactic Centre
Milky Way
Sgr A
Sgr A*
GalaxiesGalaxies are large collections of many millions or billions of stars, along with dust and gas, that are held together by their mutual gravitational attraction. All galaxies are thought to contain significant amounts of `dark matter' which contributes to the gravitational force but which has yet to be detected by other means. Many galaxies are `active', meaning that they contain central sources of intense optical, radio, and/or X-ray emission. |
| Centre of the Milky Way (7 images)
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| Galactic Centre | Galactic Centre | Milky Way | Sgr A | Sgr A* | more > |
| Normal Galaxies (20 images)
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 2MASX J13292859 3235223 |  M 101 |  M 101 |  M 101 |  M 31 | more > |
| Starburst Galaxies (21 images)
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 M 82 |  M 82 |  M 82 |  M 82 |  M 83 | more > |