Message boards : Science : Is There a Black Hole in Our Backyard?
Message board moderation

To post messages, you must log in.

AuthorMessage
Jim1348

Send message
Joined: 28 Feb 15
Posts: 253
Credit: 200,562,581
RAC: 0
Message 4470 - Posted: 11 Sep 2020, 16:41:23 UTC

But you don’t need a star to die to make a black hole. In 1971, Stephen Hawking, drawing on an idea earlier suggested in 1966 by the Russian physicists Yakov Borisovich Zel’dovich and Igor Dmitriyevich Novikov, theorized that intense pressures during the Big Bang could have collapsed matter directly into black holes. Those primordial black holes could be of any size and could be anywhere. A black hole as massive as Earth would be about the size of a Ping-Pong ball and would be exceptionally hard to see.

No such primordial black holes have been detected yet. But neither has their existence been ruled out. Dr. Scholtz and Dr. Unwin pointed out that an experiment called OGLE, for Optical Gravitational Lensing Experiment, based at the University of Warsaw in Poland, had detected the presence of a half-dozen dark objects in the direction of the center of our Milky Way galaxy. Their gravitational fields had acted as lenses, briefly amplifying the light from distant stars that they drifted in front of.

Those objects could be free-floating planets, the authors said, with masses ranging from half to about 20 times that of Earth. But they could as easily be primordial black holes floating around the galaxy, the astronomers proposed. If that were the case, the putative Planet Nine could well be a black hole, too, in a distant orbit around the sun.
https://www.nytimes.com/2020/09/11/science/astronomy-planet-nine-black-hole.html

I wonder how this ties in with the Universe work?
ID: 4470 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote

Message boards : Science : Is There a Black Hole in Our Backyard?




Copyright © 2024 Copernicus Astronomical Centre of the Polish Academy of Sciences
Project server and website managed by Krzysztof 'krzyszp' Piszczek