Dandav Posted December 7, 2022 Author Report Share Posted December 7, 2022 11 hours ago, Halc said: So yes, there was a time when the prevailing view suggested that most stars tended to stay in the same 'arm'. When was it and why the stars tend to stay together in the arm? 11 hours ago, Halc said: There is no valid physics that suggests that an arbitrary subset of matter like that can exhibit gravity in isolation of other gravity. is it? Please look carefully at the following image: https://www.nasa.gov/image-feature/goddard/2022/hubble-inspects-a-pair-of-space-oddities Do you confirm the following: 1. We observe dual spiral galaxies. 2. Each galaxy has two spiral arms while each arm is located exactly at 180 degrees from the other arm. 3. Mutual gravitational attraction - It is stated: "This elongated stream of stars and interstellar dust is known as a tidal tail, and it formed by the mutual gravitational attraction of the two foreground galaxies." Therefore, do you agree that the bridge is all about two arms that are connected/interact to each other by gravity force? 5. Please look at the other arm of each galaxy - Do you agree that it is located exactly on the other side? Therefore, can we agree that the other arm is due to tidle gravity force? 7. T-hold time = The time duration for that mutual gravitational attraction, (or how long this structure of "mutual gravitational attraction" could live in total)? Few thousands of years, few million years or you are sure that this Mutual gravitational attraction had been formed yesterday and it will break down by tomorrow morning? 8. Do you confirm that during T-hold time the spiral arms of each galaxy can't rotate anymore? 9. Do you agree that as long as the two galaxies are connected by their mutual gravitational attraction in one arm, then the other arm can't move. 10. If the answer is yes - then why can't we claim that those two arms in each galaxy are gravitational arms? Quote Link to comment Share on other sites More sharing options...
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