File:GRB illustration Earth.jpg

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Summary

Description
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.
Русский: Представление художника о воздействии гамма-излучения от близкой (менее 6000 световых лет) вспышки сверхновой на атмосферу Земли. (Фронт ударной волны изображён в голубом цвете, хотя в реальности гамма-излучение не имеет цвета.) Оно разрушает озон и создаёт слой коричневого смога диоксида азота. Такое событие в прошлом гипотетически могло вызвать массовое вымирание.
Date
Source https://www.nasa.gov/vision/universe/starsgalaxies/gammaray_extinction.html
Author NASA

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Public domain 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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current23:08, 9 February 2016Thumbnail for version as of 23:08, 9 February 2016576 × 745 (65 KB)Danyel3096Transferred from en.wikipedia
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