ALEX CHERNEY, TERRASTRO.COM / SCIENCE PHOTO LIBRARY ALEX CHERNEY, TERRASTRO.COM / SCIENCE PHOTO LIBRARY
MAGIC telescope at night. There are two MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescopes, both located on La Palma, the Canary Islands. They are used to detect high-energy gamma rays by detecting the particles produced as the gamma rays impact the Earth's atmosphere. Gamma-ray sources studied include black holes, active galactic nuclei, X-ray binaries, and gamma ray bursts. The main telescope dish is 17 metres across. The two MAGIC telescopes began operating in 2004 and 2009. In the background is the Milky Way, the band of billions of stars that is our galaxy seen from the inside.
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