Question

astronomy

Incorrect Question 1 0/ 1 pts In class I showed how to change the units of the Hubble constant from km/s per million light years into sec-1. I claimed that one over this number gave the number of seconds since all the galaxies traced back to being on top of one another. This reasoning is only valid if the speed of any individual galaxy was ___over the entire time of flight. first increasing, then decreasing later constant first decreasing, then increasing later

Answer 1

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