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Author Topic: What would the sky look like?  (Read 1516 times)

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Offline tony.673

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What would the sky look like?
« on: 21:15:12, 25 July, 2013 »
Right. Ruling out the effects of a possible black hole in the center of the galaxy, what would the sky look like if our solar system was deep within the central bulge of the Milky Way? As the stars are more densely packed, would the sky be a lot brighter?

Tony
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Offline dciobota

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Re: What would the sky look like?
« Reply #1 on: 16:26:46, 26 July, 2013 »
Interesting question.  I found a link with a similar question and some answers, one that makes good sense:
http://physics.stackexchange.com/questions/25706/density-of-stars-near-the-center-of-the-milky-way

 So basically, on the average, expect the nights in that neighborhood to be the equivalent of a full moon (and maybe brighter) every night.  Sure ruins your night vision.  ;-)
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Offline tony.673

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Re: What would the sky look like?
« Reply #2 on: 20:08:20, 26 July, 2013 »
Interesting, I shall have to Google some more.

Tony
102mm f6 refractor, HEQ5, AA Gpcam130c, Neximage, SPC900, Celestron 15x70 binos, Canon 550D 70-300mm, 18-250mm, 400mm f6.3 & nifty fifty.

Offline swashy

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Re: What would the sky look like?
« Reply #3 on: 20:39:25, 26 July, 2013 »
I would guess it would be quite awesome, and very brightly filled with many highly luminous stars, like having a thousand Sirius's around you, of course the gravity well of the black hole may make this quite a different scenario, and likely not a comfortable place to be
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Offline aerodda

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Re: What would the sky look like?
« Reply #4 on: 19:41:55, 07 October, 2013 »
Depends on the 'when'.

The universe is expanding at (approximately) 3.53 times the speed of light.  That's cosmological expansion so nothing's actually travelling faster than light!  So eventually in the far future the night sky would be black.  Not a star in sight. 

The effects of local gravity that causes 'peculiar' motion and binds our Local Group of galaxies (and what will cause Andromeda to merge with our Milky Way in a half billion years or so) will delay things a little.

But, thanks to the repulsive force built into the Einstein/FRW equations, the 'Big Rip' is our future...

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Doctor Doom.

Offline Einari

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Re: What would the sky look like?
« Reply #5 on: 23:43:07, 07 October, 2013 »
100 billions years and there won't be other galaxies - just our own.
http://scienceblogs.com/startswithabang/2012/08/23/where-will-we-all-be-in-100-billion-years/
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