Milky Way's black hole to eat planet-forming cloud
A young star and its planet-forming cloud are being pulled towards the huge black hole at the centre of our galaxy, astronomers say. Earlier this year, researchers reported seeing a cloud of ionised gas and dust falling in towards SgrA*. They suggested that it formed when gas streaming from two nearby stars collided, like wind-blown sand gathering into a dune. Read more
At first glance, the center of the Milky Way seems like a very inhospitable place to try to form a planet. Stars crowd each other as they whiz through space like cars on a rush-hour freeway. Supernova explosions blast out shock waves and bathe the region in intense radiation. Powerful gravitational forces from a supermassive black hole twist and warp the fabric of space itself. Yet new research by astronomers at the Harvard-Smithsonian Centre for Astrophysics shows that planets still can form in this cosmic maelstrom. For proof, they point to the recent discovery of a cloud of hydrogen and helium plunging toward the galactic center. They argue that this cloud represents the shredded remains of a planet-forming disk orbiting an unseen star. Read more