Timeline for In theory, can we count every galaxy in the observable universe one-by-one?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| May 21, 2018 at 12:02 | comment | added | Thriveth | This answer concerns itself with what is technically feasible with current technology, but the question is about what we can do in principle. | |
| May 20, 2018 at 9:12 | comment | added | my2cts | You will still have to deal with merging galaxies: do you count 1, 2 or perhaps many dwarf satellites in various states of merger? Also many distant galaxies will be covered by closer ones, or at least by the dust clouds in closer ones. Then there is the fact that the further we look the further we look back in time. How many galaxies are there today? | |
| May 20, 2018 at 8:58 | comment | added | StarlightDown | Let's assume we can make our lens arbitrarily wide to fit the situation. Our telescope is very sensitive. Can we do the task counting one-by-one instead of sampling? That was what I really wanted to know. | |
| May 20, 2018 at 8:49 | history | answered | Tausif Hossain | CC BY-SA 4.0 |