Misconceptions About the Universe
Video Statistics and Information
Channel: Veritasium
Views: 6,003,495
Rating: 4.8781414 out of 5
Keywords: veritasium, science, physics, universe, expanding, misconceptions, light, speed of light, relativity, particle horizon, light-year, observable universe, hubble, galaxy, expansion, hubble sphere, finite, infinite
Id: XBr4GkRnY04
Channel Id: undefined
Length: 5min 46sec (346 seconds)
Published: Tue May 27 2014
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Damn! My mind has failed me again!
edit: typo (double fail)
Wait... I thought the Universe was finite. I thought that's what an expanding universe meant. :S
Despite sucking in all the universe science i could get my hands on since the age i could read this is the first time i got explained why its called "the observable universe"...
Am i the only one who never though about or noticed this prior?
See, what always makes my puny head hurt is volume.
We think of everything in volume, it takes up room, it takes up space. My glass of water is filled and taking up space, my car outside is taking up volume and space.
When I think about space and being infinite, it just hurts my head, like what is space being held in? Where is space located? What volume is space taking up? sigh
I saw a documentary where a physicist once said that using "infinty" to describe certain aspects of the universe and physics is sort of "cheating" and equal to, "our formulas broke down". Not sure if accurate but that's what I got towards the end. Like, Wat?
This guy sounds exactly like Grant from the Mythbusters, but isn't Asian enough.
The light from the particle horizon we see today is from a light source as it was billions of years ago when it was emitted, correct? If so, are we trying to draw conclusions based on representations of different galaxies that we are observing at different times of their lifes. How do they know what current universe is doing when the light we are looking at is essentially a look into the past?
Doesn't the beginning of the video imply that we are stationary? Or is he saying that the distance between two objects can increase faster than the speed of light?
The amount of times I've tried to understand things like this and suddenly my brain will... clench... is pretty weird.
This fucking blows my mind.