The observable-universe tag has no wiki summary.
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Size of the Observable Universe [duplicate]
I wanted to know what the observable universe is so I was thinking and I thought, it must be age of the universe times 2.
Well I was wrong. I found on one website that it is 46B LY across in each ...
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What are we all falling towards?
One meteorite fell on the ground in Russia, last week. In different circumstances, it could have orbited the earth, or perhaps pass close to the earth and then disappear into the space.
It seems that ...
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Looking backwards in time at yourself
If a person on Earth today is looking at a star, say, 10 billion light years away, is it possible that some of the atoms he is looking at will eventually go on to make him?
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Observable universe does it account for farther away galaxies measure of the observable universe?
From our planet we can only see so far on any direction.
If a galaxy farther out than ours had a planet would its view extend beyond our measurements?
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Large-Scale-Structure (LSS) and the Fingers-of-God
In the Large-Scale-Structure (LSS) artifacts named fingers-of-god are apparent in the redshift space and justified by
"The large velocities that lead to this effect are associated with the
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How long would it take to scan the visible universe for unique signals?
The article Amazing rays as star succumbs to dark side talks about a very large black hole swallowing up a star. The report goes on to say that the only reason it was discovered was because it shot ...
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How would the night sky appear at the edge of the galaxy?
In Isaac Asimov's Foundation Series, there is a planet named Terminus which is believed to be the planet farthest from the galactic center.
There are almost no visible stars in its sky, only the ...
