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If the universe is expanding, are we expanding too?

16 pointsby autokillover 4 years ago

8 comments

srtjstjsjover 4 years ago
Veritasium recently did a video on this<p><a href="https:&#x2F;&#x2F;www.veritasium.com&#x2F;videos&#x2F;2020&#x2F;10&#x2F;23&#x2F;do-you-expand-with-the-universe" rel="nofollow">https:&#x2F;&#x2F;www.veritasium.com&#x2F;videos&#x2F;2020&#x2F;10&#x2F;23&#x2F;do-you-expand-w...</a>
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emergedover 4 years ago
Did galaxies evolve much quicker billions of years ago since expansion hadn&#x27;t yet pulled them as far apart? In other words, the further back in time you go did matter tend to interact much more frequently so in some sense the interaction-time of the universe is much longer than the actual number of years?
WeniTheElderover 4 years ago
Between two charged particles (electric or maybe neutral particles by gravity) is some force. Moving them away will require energy. So e.g. you put two charged particles in this expanding space, the ongoing expansion will cause some energy which can be harvested? Can we build our &quot;Zero point modul&quot; which generates energy out of &quot;nothing&quot;.<p>We dont even need particles for this effect since this is based on virtuell particles which ghostly appear and disappear (the Casimir effect)? Or maybe a proper medium would suit better (more particles more energy from expansion) e.g. the densest object like a black hole in this expanding space machine?
slowmovintargetover 4 years ago
The simple answer is &quot;No.&quot;<p>The more complicated answer is that empty space is expanding, but matter is not. Gravity, and matter subjected to the various forces, holds together even as empty space expands around it.
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762236over 4 years ago
The wild thing to me, assuming I understand it correctly, is that the expansion speed can exceed the speed of light.
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EdgarVeronaover 4 years ago
I just ate enough thai food for 3 people so I&#x27;m pretty sure I am at least
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rriversover 4 years ago
Yes if we consider the universal as information and our relationships to it as receivers. We&#x27;ve been expanding our time experience for millennia and will continue to so as long we continue to imagine and create.
drummerover 4 years ago
All organisms expand or grow. The universe is an organism. The earth is an organism. And it is growing. Etc.
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