[Les Allen]

Photos: Black Holes of the Universe
by Tariq Malik, SPACE.com Managing Editor
http://www.space.com/31-black-holes-universe.html

Black holes are some of the universe's most enigmatic and mysterious objects. Take a tour of some of the most famous ones in the cosmos.

See Link for Photos

[leareliovag]

Nice photos CN.....
I once had cusp tell me that we have more evidence for DM then we do for BH's.
Although I must add that at that time, his research was with regards to DM, so he may have had a slight agenda.
Probably equally I would suggest, but I'm open for correction.

Another forum brain a few days ago made a remark that we should remember that we have as yet, never seen gravitatiional radiation.
We have also never seen DM and BH's, but evidence suggests that all three exist.

[FourEsters]

In the centre of our galaxy several stars orbit a massive unseen object. The only thing we know it could be is a super massive black hole. So the evidence for their existence is very strong.

[gechaheritt]

In the centre of our galaxy several stars orbit a massive unseen object. The only thing we know it could be is a super massive black hole. So the evidence for their existence is very strong.

Hi rjh01 ....
It's the whole galaxy that orbits the MW's SMBH which we call Sagittarius A*.
We now are sure most, if not all galaxies [not just spirals] have SMBH's at their core.