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Zerger
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If galaxies fly apart from each other with ACCELERATION, why is the term "universal attraction" used and not "universal repulsion"?
To expand on @kuruman's question, why do you think it is not possible for two things to attract each other even while one accelerates away from the other? How do rockets leaving Earth act?Zerger said:If galaxies fly apart from each other with ACCELERATION, why is the term "universal attraction" used and not "universal repulsion"?
The Milky Way and Andromeda galaxies are on a collision course, due to their mutual gravitational attraction. See, for example:Zerger said:If galaxies fly apart from each other with ACCELERATION, why is the term "universal attraction" used and not "universal repulsion"?
And ... so much for the Socratic Method.PeroK said:The Milky Way and Andromeda galaxies are on a collision course, due to their mutual gravitational attraction. See, for example:
https://en.wikipedia.org/wiki/Andromeda–Milky_Way_collision
At the largest cosmological scales, so-called dark energy (energy of the vacuum) dominates gravitational attraction and results in an accelerating expansion of the universe.
Why do you think that two objects cannot repel each other, even if one is accelerating toward the other?Which should be exemplified - all rocks or all galaxies?phinds said:To expand on @kuruman's question, why do you think it is not possible for two things to attract each other even while one accelerates away from the other? How do rockets leaving Earth act?
Answering my question with a strawman does not answer my question, even though you seem to think that it does.Zerger said:Why do you think that two objects cannot repel each other, even if one is accelerating toward the other?Which should be exemplified - all rocks or all galaxies?
The force pushing the entire universe is the force of universal repulsion. Ok?PeroK said:The Milky Way and Andromeda galaxies are on a collision course, due to their mutual gravitational attraction. See, for example:
https://en.wikipedia.org/wiki/Andromeda–Milky_Way_collision
At the largest cosmological scales, so-called dark energy (energy of the vacuum) dominates gravitational attraction and results in an accelerating expansion of the universe.
Where is the term "universal attraction" used? Please provide some specific references that use that term. Two words taken out of context are not particularly meaningful.Zerger said:why is the term "universal attraction" used
Not OK!Zerger said:The force pushing the entire universe is the force of universal repulsion. Ok?
Ok.PeroK said:Not OK!