All Questions
Tagged with observable-universe gravity
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Can the gravity of objects entering the observable universe be detected?
As time passes, we will be able to see objects that are further away, as their light eventually reaches us. Since gravity also travels at the speed of light, would we be able to detect when a super ...
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Is it "nonsense to even talk about" objects outside the observable universe not having gravitational influence on us? (finite speed of gravity)
In this supplemental answer to Is the zero gravity experienced in ISS the “artificial” kind? in Space Exploration SE I said:
Gravity moves at the speed of light so nothing outside out observable ...
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How is the gravitational effect of galaxies outside of the visible universe on galaxies within the visible universe currently modeled?
Given currently accepted models of the universe,
How much mass is outside of the visible universe?
What is the gravitational effect of that mass on the visible universe?
The question How strong is ...
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Can two planets in an empty universe meet/be pulled together?
For this question assume that the entire universe is completely empty. The universe is not expanding or contracting, it is completely motionless since time immemorial and has never moved before.
Only ...
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