If the gravitational attraction is important in a neutron star where the neutrons are close together, then why isn’t the gravitational interaction important in a nucleus with many neutrons? If all the...


If the gravitational attraction is important in a neutron star where the neutrons are close together, then why isn’t the gravitational interaction important in a nucleus with many neutrons?


If all the distant galaxies are moving away from us, explain why we are not at the center of the universe.


How can you explain the fact that the Andromeda Galaxy appears to be approaching us rather than receding?


Explain why the universe cannot be older than the Hubble time.



May 25, 2022
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