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About the Image
- Date
- 2009-02-10
- ID
- ssc2009-03b3
- Type
- Observation
- Credit
- NASA, CXC, and K. Kuntz (JHU)
About the Object
- Name
- Pinwheel Galaxy • Messier 101 • M101
- Type
- Galaxy > Type > Spiral
- Galaxy > Activity > Normal
- Distance
- 27,000,000 Light Years
- Redshift
- 0.0008
Color Mapping
| Band | Wavelength | Telescope |
| X-ray | 0.7 keV | Chandra ACIS |
| X-ray | 5.0 keV | Chandra ACIS |
Spiral Galaxy M101 - Chandra X-ray Observatory
Chandra's image of Messier 101, taken in X-ray light, shows the high-energy features of this spiral galaxy. X-rays are generally created in violent and/or high-temperature events. The white dots are X-ray sources that include the remains of exploded stars as well as material colliding at extreme speeds around black holes. The pink and blue colors are emission from million-degree gas and from clusters of massive stars. The pink emission indicates lower-energy X-rays and the blue higher-energy X-rays. One reason astronomers study Messier 101's X-rays is to better understand how black holes grow in spiral galaxies.
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Image NASA's Great Observatories Celebrate the International Year of Astronomy ssc2009-03a |
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Image Spiral Galaxy M101 - NASA's Great Observatories ssc2009-03b |
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Image Components
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Image Spiral Galaxy M101 - Spitzer Space Telescope ssc2009-03b1 |
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Image Spiral Galaxy M101 - Hubble Space Telescope ssc2009-03b2 |
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Image Spiral Galaxy M101 - Chandra X-ray Observatory ssc2009-03b3 |

























