- #1
nekdolan
- 2
- 0
The question is: Why does the fact that Galaxies moving away (and accelerating) from the Milky Way, means that the Universe is expanding?
If there was a *gigantic* black hole somewhere far away it would naturally cause this effect.
As objects get closer to the black hole they accelerate, and since we are also falling in we would too. Things that are closer accelerate faster, than things that are further away. So everything would look like it accelerates, looking at it from the Milky Way (since the rate of acceleration increases).
It is true that, if everything was falling into a black hole, that would cause the galaxies not just to accelerate, but to come closer, however that effect is not something we could measure, because of the acceleration.
Except, if the measured objects were at the same distance from the Black Hole. Like the Stars in a Galaxy...maybe that's why galaxies don't fly apart, and not because of dark matter?
I probably made some kind of mistake, so could you please enlighten me what it was!?
If there was a *gigantic* black hole somewhere far away it would naturally cause this effect.
As objects get closer to the black hole they accelerate, and since we are also falling in we would too. Things that are closer accelerate faster, than things that are further away. So everything would look like it accelerates, looking at it from the Milky Way (since the rate of acceleration increases).
It is true that, if everything was falling into a black hole, that would cause the galaxies not just to accelerate, but to come closer, however that effect is not something we could measure, because of the acceleration.
Except, if the measured objects were at the same distance from the Black Hole. Like the Stars in a Galaxy...maybe that's why galaxies don't fly apart, and not because of dark matter?
I probably made some kind of mistake, so could you please enlighten me what it was!?