Question

Does every spiral galaxy in the universe have a black hole at its centre?

Answer 1

$\huge\underline{ANSWER:-}$

A reader asked a similar question in the October 2012 issue of Astronomy magazines. Karl Gebhardt of the University of Texas at Austin basically noted that since we don't see the galactic centers directly, we don't KNOW for sure, but we can make some well-supported inferences:

•For some regions of space we've observed, only the presence of something like a black hole would explain the density and behavior of the mass there.

•We've measured the mass at the centers of a lot of galaxies, and the only way to explain those regions is also a black hole.

•Because pretty much every galaxy we've measured requires a central black hole to explain the behavior of the mass at its center, the inference is that all galaxies have one.

Unfortunately, you need a subscription to see the full article, but your local library can almost certainly provide you with a copy of it.

Plz mark as brainlist.....