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kymner's latest activity
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kymner
replied to the thread
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How fast were distant galaxies moving?
.
To be clear, I am not talking about expansion at all but about the local velocities of the galaxies within their local clusters at...
Apr 14, 2024
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kymner
posted the thread
I
How fast were distant galaxies moving?
in
Astronomy and Astrophysics
.
I'm aware that the expanding universe causes galaxies to move away at a velocity proportional to distance. However, I have some interest...
Apr 14, 2024
K
kymner
posted the thread
B
Energy loss of a photon
in
Special and General Relativity
.
I've been told that a photon doesn't lose energy as it travels through a vacuum because it doesn't experience time. However, general...
Apr 13, 2024
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