How do we know that the universe is actually expanding? What if everything inside the universe is just shrinking?

How do we know that the universe is actually expanding? What if everything inside the universe is just shrinking?

Other urls found in this thread:

en.wikipedia.org/wiki/Edwin_Hubble
pnas.org/content/15/3/168
twitter.com/SFWRedditVideos

redshift

>The universe is expanding
>Same constellations at the same distance every day, every month, every year for thousands of years
>they just spin in a circle over and over and over

but yeah the universe is expanding and the earth is definitely doing at least 4 different movements right now :^)

What if the light pellets are shrinking too?

Gravity keeps distances relative.

>gravity that can't even stop a helium balloon from soaring or butterflies from flying

Some nature things can ignore gravity... birds can because they evolved to... but stars can't, that's why they orbit the megastar at the center of our galaxy, and that megastar is influenced by other galaxies' megastar centers.

Pellets?!

"Some nature things can ignore gravity... birds can because they evolved to... but stars can't"

-Veeky Forums 2016

You know, the light pellets the sun emits that lets us see everything, they bounce around and into our eyes. They look red because it's the illusion that they are running away from us when they're actually shrinking.

>birds can ignore gravity
>biological creatures can ignore physics

They don't bounce around. This is not how photons actually work. This is the high school definition of photons to make them seem less odd than they are.

Yeah, because of their wings, retard.

>wings allow birds to ignore physics

-retarded user

Not an argument.

There are times when it's not worth an argument. Your statement is so fucking retarded that I would gain absolutely nothing from arguing with you.

Not an argument.

I didn't reply to him because I realised he was a troll or a shill

this

This is top tier bait, enjoy your (You)

en.wikipedia.org/wiki/Edwin_Hubble

"Hubble is known for showing that the recessional velocity of a galaxy increases with its distance from the earth, implying the universe is expanding"

Hubble, Edwin (1929). "A relation between distance and radial velocity among extra-galactic nebulae" pnas.org/content/15/3/168

>Hubble got further
>The universe is expanding

what a reach

Cant stop laughing

u wot m9