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May
18
awarded  Student
May
18
awarded  Scholar
May
18
comment Difference in redshift between 2 interacting galaxies
Thanks for the ref and the very complete answer! (and I corrected my typo thanks to you).
May
18
accepted Difference in redshift between 2 interacting galaxies
May
18
awarded  Editor
May
18
revised Difference in redshift between 2 interacting galaxies
Corrected typo in galaxy A vs B.
May
15
asked Difference in redshift between 2 interacting galaxies
Feb
23
awarded  Yearling
Sep
24
awarded  Autobiographer
Feb
28
awarded  Critic
Feb
28
comment What is the evidence that galaxies rotate?
Effectively, this answer is more than speculative. As underlined by MBR, many (most) of these statements are simply wrong. Maybe answers here should be based on something else than speculation.
Feb
28
awarded  Informed
Feb
28
awarded  Supporter
Feb
28
answered Do telescopes harm while observing sun through them?
Feb
25
awarded  Nice Answer
Feb
24
answered Are we moving ever closer to the center of our Galaxy due to a super massive black hole?
Feb
24
answered Do solar systems have to evolve in a galaxy?
Feb
23
awarded  Teacher
Feb
23
answered Age of the universe