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Supermassive black holes: what are they?

[ad_1] Supermassive black holes are found at the center of many galaxies, including the Milky Way. Our galaxy’s black hole, Sagittarius A*, is suspected to contain 3.7 million solar masses. Active galaxies, such as quasars and blazars, can release energy equivalent to hundreds of galaxies combined. At least 30 supermassive black holes have been observed […]

How many black holes exist?

[ad_1] WISE telescope discovered 2.5 million active black holes, some up to 10 billion light-years from Earth. Most stars won’t become black holes, and there’s no standardized naming system. M87 is the largest known black hole. Astronomers have discovered about 2.5 million active black holes using the Wide-field Infrared Survey Explorer (WISE) telescope. Some of […]