2007-01-11 18:21:44 · 6 answers · asked by Kaien かいえん 4 in Science & Mathematics ➔ Astronomy & Space
All spiral and elliptical galaxies have them but smaller galaxies called irregulars probably don't. They range is mass from millions to billions of solar masses. Why they are there is unknown. They could be leftover from the Big Bang somehow or may have grown to their present mass by swallowing matter, including stars, in the 13.7 billion years since the Big Bang. To Billy the Bee: there is overwhelming evidence of a black hole at the center of the Milky Way.
2007-01-11 18:56:54 · answer #1 · answered by Michael da Man 6 · 0⤊ 0⤋
We don't even know if black holes exist and there is no evidence of one at the center of our galaxy.
2007-01-12 12:02:00 · answer #2 · answered by Billy Butthead 7 · 0⤊ 0⤋
The theory is that all galaxies have a black hole in the center.
2007-01-12 05:38:07 · answer #3 · answered by Voodoid 7 · 0⤊ 0⤋
I saw a show on PBS last month about this and they have found them is almost every or maybe every galaxy(it has bee a month). They found them by the elliptical orbits of the stars and stuff around this spot of nothing. with time laps photography you could see them being slung shoot around it.. Mighty cool
2007-01-12 02:45:20 · answer #4 · answered by paducahshane1 2 · 0⤊ 0⤋
From what I gather yes! All galaxies have a black hole. I think there are some that have whats called a "super massive" black hole. Our galaxy is one of such to have one. I suppose some do not. They just have a normal sized black hole.
2007-01-12 02:26:18 · answer #5 · answered by Anonymous · 0⤊ 0⤋
we really don't know do we
2007-01-12 02:24:20 · answer #6 · answered by Anonymous · 0⤊ 0⤋