File:Gamma rays hitting the Earth's atmosphere.tif
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English: Scientists say that a ten-second burst of gamma rays from a massive star explosion within 6,000 light years from Earth could have triggered a mass extinction hundreds of millions of years ago. In this artist's conception we see the gamma rays hitting the Earth's atmosphere. (The expanding shell is pictured as blue, but gamma rays are actually invisible.) The gamma rays initiate changes in the atmosphere that deplete ozone and create a brown smog of NO2. |
| Date | |
| Source | https://www.nasa.gov/vision/universe/starsgalaxies/gammaray_extinction.html |
| Author | NASA |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:02, 20 August 2023 |  | 2,550 × 3,300 (24.08 MB) | Юрий Д.К. (talk | contribs) | Uploaded a work by NASA from https://www.nasa.gov/vision/universe/starsgalaxies/gammaray_extinction.html with UploadWizard |
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