The discovery should help astronomers better understand the extreme conditions at the center of our galaxy and what can survive there.
Astronomers have discovered a star that orbits the supermassive black hole at the center of our galaxy every four years. That’s the shortest orbit ever observed around a supermassive black hole.
In 1971, the British astronomers Donald Lyndon-Bell and Martin Rees first suggested that a supermassive black hole might sit at the center of the Milky Way, its huge gravitational force heating gas and dust and martialling stars nearby.The first observations of this bizarre object came three years later. Called Sagittarius-A* , it sits some 26,000 light years from Earth and turns out to be about 4 million times more massive than the Sun.
Florian Peiβker at the Institute of Physics at the University of Cologne in Germany and colleagues, first suspected the existence of S4716 in infrared images taken by the Keck Observatory in Hawaii.
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