What is it about?

According to Einstein's General Relativity, light is deflected passing close to a large mass. To a distant observer the mass focuses light like a giant lens. The MAGIC telescopes reported the discovery of the most distant gamma-ray source ever observed at very high energies, observed through a galactic gravitational lens as foreseen by Einstein’s General Relativity.

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Why is it important?

This is the first time Einstein gravitational lens phenomenon is observed in very high energetic gamma-rays

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This page is a summary of: Detection of very high energy gamma-ray emission from the gravitationally lensed blazar QSO B0218+357 with the MAGIC telescopes, Astronomy and Astrophysics, November 2016, EDP Sciences,
DOI: 10.1051/0004-6361/201629461.
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