joeydiaz
Well-known member
A cluster of galaxies is galaxies that are glued together via gravity and typically contains 10^14 galaxies. That's 10 with 14 zeros. I think that's a trillion galaxies, if my zeros are right.
Outstanding, thank you.
A cluster of galaxies is galaxies that are glued together via gravity and typically contains 10^14 galaxies. That's 10 with 14 zeros. I think that's a trillion galaxies, if my zeros are right.
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Bravo. I like this post.Challenge. Accepted.
Proxima Centauri is approx. 4.246 light years away. One light year is 5.879 trillion miles.
So PC is 24.96 trillion miles away and the sun 93 million miles away.
This means PC is 268,411 times further away from the sun than the sun is from earth.
The length of the Riverside is 105 metres (0.065 miles).
If the earth was the Riverside stadium, and the sun was another Riverside stadium built directly behind the earth...
The third Riverside stadium would need to be built 17,446 miles away.
Sydney is only 10,000 miles away.
Watched the programme about it on BBC2 last night - really interesting
To think we will be able to see images from what could be around the beginning of time....
That's a bit of an assumption, the beginning of time bit. Some cosmologists are beginning to doubt the big bang model. We don't see background radiation from the big bang but there may be some good answers to that. 1 being that the expansion at the edge of the observable universe is just too quick so the radiation would never reach us. In other words the expansion is much quicker than the speed of light. The second argument was the early universe was opaque.Watched the programme about it on BBC2 last night - really interesting
To think we will be able to see images from what could be around the beginning of time....