Downtown: Astro FOTD

The center of our galaxy is a happening place - besides the resident kinda-sorta Super Massive Black Hole (3 million solar masses or so, but a piker compared to those in the big elliptical galaxies) - there is a very high density of stars, rampant recent star birth, and dusty clouds of gas. We can't see this stuff in the visible, as only about one visible photon in a trillion makes it way through the dust to us, but other wavelengths penetrate better.

It's a starry starry night there, as stellar density is a million times greater than in our neighborhood. On a dark night, a person of good eyesight on Earth can see about 7000 stars - if you were in the galactic nucleus, you could see millions.

A nice place to visit, perhaps, but you wouldn't want to live there. O supergiants are bound to go supernova soon, and the radiation from the BH and other hot stuff would make the place pretty uninhabitable.


Popular posts from this blog

Left, Right and Indian

Harari Again

Soul Terror