File:PIA20061 - Andromeda in High-Energy X-rays, Figure 1.jpg
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[編輯]描述PIA20061 - Andromeda in High-Energy X-rays, Figure 1.jpg |
English: NASA's Nuclear Spectroscope Telescope Array, or NuSTAR, has imaged a swath of the Andromeda galaxy -- the nearest large galaxy to our own Milky Way galaxy.
NuSTAR's view (inset) shows high-energy X-rays coming mostly from X-ray binaries, which are pairs of stars in which one "dead" member feeds off its companion. The dead member of the pair is either a black hole or neutron star. NuSTAR can pick up even the faintest of these objects, providing a better understanding of their population, as a whole, in Andromeda. The findings ultimately help astronomers gather clues about similar objects in the very distant universe. The background image of Andromeda was taken by NASA's Galaxy Evolution Explorer in ultraviolet light. Andromeda is a spiral galaxy like our Milky Way but larger in size. It lies 2.5 million light-years away in the Andromeda constellation. |
日期 | (released) |
來源 | https://photojournal.jpl.nasa.gov/catalog/PIA20061 / http://photojournal.jpl.nasa.gov/figures/PIA20061_fig1.jpg |
作者 | NASA/JPL-Caltech/GSFC |
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影像標題 | At approximately 2.5 million light-years away, the Andromeda Galaxy, or M31, is our Milky Way's largest galactic neighbor. The entire galaxy spans 260,000 light-years across - a distance so large, it took 10 GALEX images stitched together to produce this view of the galaxy next door. The wisps of blue making up the galaxy's spiral arms are neighborhoods that harbor hot, young, massive stars. Meanwhile, the central orange-white ball reveals a congregation of cooler, old stars that formed long ago. Andromeda is so bright and close by that it is one of only three galaxies that can be spotted from Earth with the naked eye. This view is two-color composite, where blue represents far-ultraviolet light, and red is near-ultraviolet light. |
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標題 | At approximately 2.5 million light-years away, the Andromeda Galaxy, or M31, is our Milky Way's largest galactic neighbor. The entire galaxy spans 260,000 light-years across - a distance so large, it took 10 GALEX images stitched together to produce this |
製作/提供者 | NASA/JPL-Caltech |
來源 | Galaxy Evolution Explorer |
簡稱 | Andromeda, the Galaxy Next Door |
資料產生的日期時間 | 2008年2月21日 (四) 00:00 |
IIM 版本 | 2 |
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