Explanation: This giant spiral galaxy, Messier 101 (M101), was photographed by the Ultraviolet Imaging Telescope onboard the Space Shuttle Endeavour during the Astro-2 mission (March 2 - 18, 1995). The image has been computer processed so that the colors represent the intensity of ultraviolet light. Pictures of galaxies like this one show mainly clouds of gas containing newly formed stars many times more massive than the sun, which glow strongly in ultraviolet light. In contrast, visible light pictures of galaxies tend to be dominated by the yellow and red light of older stars. Ultraviolet light, invisible to the human eye, is blocked by ozone in the atmosphere so ultraviolet pictures of celestial objects must be taken from space.

For more information see NASA Astro-2 UIT release.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: M 101 - ultraviolet - Ul'trafioletovoe izluchenie - spiral'naya galaktika Publikacii so slovami: M 101 - ultraviolet - Ul'trafioletovoe izluchenie - spiral'naya galaktika
Sm. takzhe: M51: prilivnye potoki i oblako ionizovannogo vodoroda NGC 300: galaktika iz zvezd Spiral'naya galaktika s peremychkoi NGC 1365 ot teleskopa "Dzheims Vebb" Spiral'naya galaktika NGC 6744 M106: spiral'naya galaktika so strannym yadrom NGC 247 s druz'yami Licom k NGC 6946 Vse publikacii na tu zhe temu >>