2006-09-04 10:52:16 · 19 answers · asked by martha8356@sbcglobal.net 1 in Science & Mathematics ➔ Astronomy & Space
Define "close"?
There is a supermassive black hole at the center of the Milky Way galaxy only 8500 parsecs (about 27,000 ly) . That is closest mega backhole (this one masses about 2.6 million times the mass of our sun). The closest black hole candidate (hard to tell a black hole from a non-pulsar neutron star) that I know of .
According to APOD, the closest black hole candidate is about 450 parsecs from Earth. There is a strong selection effect here, however. Only accreting black holes are detectable at all. There are likely some that are much closer.
An upper limit on primordial black holes (holes that formed from statistical density fluctuations in the early universe) is about 1 every 2.5 cubic parsecs, so their could be one of those as nearby as a few light years.
2006-09-04 11:54:24 · answer #1 · answered by Mr. Quark 5 · 0⤊ 0⤋
1
2006-09-04 17:53:28 · answer #2 · answered by IM THE GAY GOD ALL FEAR ME 5 · 0⤊ 2⤋
I have read some speculations about the existance of black holes at a nano scale that could be aroud us as we speak. They are infinitesimal small, but enough mass to create the conditions of black hole. They are as dense as stellar black holes but with less mass and ans specially less volume.
If a remember well the size of a stellar black hole, is D=2-9 Km compared to D=10^-9 Km found on this black holes.
Since they don't large quantities of mass they don't affect earth gravitationally. They can pass through earth without even us noticing, taking some mass in the process. They do affect light in the sense that is escape the event horizon as normal black holes do.
2006-09-04 18:13:00 · answer #3 · answered by Roberto I 2 · 0⤊ 0⤋
if you look at it at the view of the whole cosmos, the earth it very close to a black hole. There is reason to believe that there is a black hole in the center of our galaxy....only about 100,000 light years away.
2006-09-04 17:59:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
no, were near the outside of the galaxy
theres a black hole in the center of the galaxy
2006-09-04 17:57:23 · answer #5 · answered by stevo 3 · 0⤊ 0⤋
Hm. Never heard that one before. I don't think so. A black hole is caused by a dying star, collapses into itself.
2006-09-04 17:54:37 · answer #6 · answered by Anonymous · 0⤊ 0⤋
NO. Anything within an unbelievably large distance from one is still drawn into it. I didn't see that happen to the Earth so I think you are wrong. Who thought you were so gullible that they told that to you?
2006-09-04 17:56:38 · answer #7 · answered by Rich Z 7 · 0⤊ 0⤋
what is close? and what is a black hole
2006-09-04 22:40:04 · answer #8 · answered by the holy divine one 3 · 0⤊ 0⤋
no, we would not be here if that was the case. there is a huge bh in the center of the galaxy and some not so big scattered around the galaxy.
2006-09-04 22:05:00 · answer #9 · answered by bonee 3 · 0⤊ 0⤋
sure, if you consider a few 100 light years close.
2006-09-04 17:55:02 · answer #10 · answered by Ron B. 7 · 0⤊ 0⤋