Timeline for Why are distant galaxies not visible in the observable Universe?
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| S Apr 21, 2014 at 19:55 | history | suggested | Peter Mortensen | CC BY-SA 3.0 |
Copy edited (but some interpretation near "so small").
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| Apr 21, 2014 at 15:50 | review | Suggested edits | |||
| S Apr 21, 2014 at 19:55 | |||||
| Feb 5, 2014 at 21:29 | vote | accept | Vivek | ||
| Feb 3, 2014 at 19:15 | comment | added | David H | @EduardoSerra As for the no-center aspect, I've found the "problem" of locating the center of the surface of the Earth to be a good analogy. Back when people still thought the Earth was a flat circle, people would draw maps as circular area of explored territory with their capital city at the center of the circle. As more and more cities started producing maps with their city at the center, people began to wonder which city is actually the World Center. Then the Greeks realized that Earth is spherical and so it has no center; only maps have centers, and map-centers are arbitrary anyway. | |
| Feb 3, 2014 at 18:08 | answer | added | OnoSendai | timeline score: 7 | |
| Feb 3, 2014 at 15:55 | answer | added | Gerald | timeline score: 1 | |
| Feb 3, 2014 at 14:55 | comment | added | Eduardo Serra | The problem lies in the fact that space itself is expanding. You're used to the idea of matter expanding an so it can be traced to it's point of origin; with spacetime it's different, our universe has no boundaries and no center, not an easy thing to imagine. | |
| Feb 3, 2014 at 14:28 | comment | added | Vivek | Thanks for your comment. Being non professional, I had doubt that it could be novice question. Nevertheless, when we say 'something is expanding' means its path can be traced back to its earlire position. Can it be a possibility that our milky way has formed in such 'expantion path' of some distant galaxy/star? If yes, then that object must be visible if it is still streaming photons no matter how far it has reached it can not be non observable. | |
| Feb 3, 2014 at 13:20 | comment | added | Eduardo Serra | Your basics are wrong because it is not an expanding sphere with a center. It has no center an it is expanding in every direction. | |
| Feb 3, 2014 at 12:34 | review | Suggested edits | |||
| Feb 3, 2014 at 14:28 | |||||
| Feb 3, 2014 at 12:07 | review | First posts | |||
| Feb 3, 2014 at 13:07 | |||||
| Feb 3, 2014 at 11:50 | history | asked | Vivek | CC BY-SA 3.0 |