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Gamma rays are the most energetic radiation in the Universe.

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Gamma rays.
Gamma rays are the most energetic radiation in the Universe.

Earth Seen in Gamma Rays.

A NASA-funded researcher has created an image of the Earth as it would look if you had gamma ray detectors for eyes. Gamma rays are the most energetic radiation known in the universe - billions to trillions more energetic than visible light - and people usually associate it with extreme environments like black holes and supernovae. The radiation in this image was captured over the course of seven years by the Compton Observatory, which orbited the Earth from 1991 to 2000.

Hubble's View of a Giant Elliptical Galaxy.

The Hubble Space Telescope recently captured this image of the giant elliptical Galaxy NGC 1316, located in the southern constellation of Fornax. The image reveals dark dust lanes and giant star clusters, which provide evidence that the Galaxy we see today is the result of a collision between two Galaxies rich in dust. The dark patches are believed to be the stellar remains of previous Galaxies engulfed by NGC 1316.

Ultraviolet view of Mimas.

NASA's Cassini spacecraft took this picture of Mimas, Saturn's "Death Star" Moon on February 18, 2005 at a distance of 938,000 km (583,000 miles). The image was taken using Cassini's ultraviolet filter, which helps to reveal better contrast of the moon's craters than would be possible in visible light. Mimas' large crater Herschel dominates the upper right of the picture.

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