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Ok so space in continually expanding away from each other in what is as we know today a limitless universe according to Astrologists.?
I do understand the concept and what they are saying but my brain has a tough time grasping the reality. I don't understand how EVERYTHING is moving away from each other? I would think that something has to be getting closer together such as stars ans galaxies but NOVA and plenty of other sources have explained that space is continually expanding and everything is moving at the speed of the universe away from each other. Then why do planets collide or etc....
2 Answers
- ?Lv 67 years agoFavorite Answer
The universe isn't actually expanding at all. The idea that it does comes from misinterpreting galactic redshifts as a doppler effect when they are actually a scattering effect. The galaxies are not generally receding from each other at all. Their light simply loses energy through it's interaction with the molecular hydrogen that fills intergalactic space:
http://www.newtonphysics.on.ca/universe/
If expanding space was responsible for cosmological redshifts it would cause a reduction in the surface brightness of distant galaxies but we find this is not realized:
http://www.sci-news.com/astronomy/science-universe...
Also, as well as stretching out the wavelengths of light, expanding space would stretch out the light curves of quasars (their oscillation in luminance). No sign of this either:
http://phys.org/news190027752.html
This documentary may enlighten you:
https://www.youtube.com/watch?v=IFFl9S39CTM There never was a Big Bang.
- Ray;mondLv 77 years ago
The mainstream ASTRONOMY theory is the expansion is only occurring large scale, such as a million light years, so collisions can occur within local galaxy groups.