@nasa : A Supermassive and Super-hungry Galaxy: This Hubble Space Telescope image shows a spiral galaxy, located over 65 million light-years away. The galaxy's orientation clearly reveals the galaxy's striking spiral structure: a flat and dust-mottled disk surrounding a bright galactic bulge. Its glowing center hosts a gigantic version of a black hole, known as a supermassive black hole. The presence of a black hole in a distant galaxy like this can be inferred from its effect on the galaxy's innermost stars; these stars experience a strong gravitational pull from the black hole and whizz around the galaxy's center much faster than otherwise. Its galactic core is not just supermassive, but also super-hungry. In 2013 researchers were observing another galaxy when they noticed a violent flare at the center. The flare came from the central black hole tearing up and feeding off an object many times more massive than Jupiter. A brown dwarf or a large planet simply strayed too close and was devoured by the hungry core of NGC 4845. Image credit: ESA/Hubble & NASA and S. Smartt (Queen's University Belfast) #nasa #space #hubble #astronomy #hst #galaxy #blackhole #nasabeyond #science
โพสต์เมื่อ 11 ม.ค. 2559 | 01:53 น.
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