DarkTheImmortal
DarkTheImmortal t1_jed8o50 wrote
It's a little counterintuitive, but it's expanding into nothing. The universe is already infinite; an infinite volume can expand and remain the same size at the same time. This can ONLY happen when infinity is involved.
DarkTheImmortal t1_jdpbfxk wrote
Tetanus is a single, specific infection. Influenza is a collection of MANY viral infections. Each flu virus requires a different vaccine. The yearly Flu vaccine is actually a combination of 4 different vaccines for the 4 viruses that researchers believe will be the most prevailing viruses of the year.
DarkTheImmortal t1_jac9hqv wrote
Normal Iron has no carbon, steel is less-than 2% carbon, and cast iron is more than 2% carbon
DarkTheImmortal t1_jabs803 wrote
Reply to Eli5: When/How did the world realize that it wasn’t the same time everywhere? by Ice_Ice_Fetus
We've known that the Earth was round at least since Ancient Greece. And while they believed the Sun moved around the Earth, it still moved. Greeks were also really big into geometry and logic so they absolutely would have realized that when it's night on one side, it's day on the other.
DarkTheImmortal t1_j2oi5l9 wrote
Reply to How do galaxies move? by modsarebrainstems
Gravity.
For short distances, the pull of the expansion of the universe is weak. The closer the 2 objects are, the weaker the expansion. I like to use a rubberband as an example because even if you can't visualize it, you can easily do it to see. Take a rubber band and cut it so it's not a loop. Place 3 dots on it, one "main" dot, one that's close to the main dot, and one that's far away. Now stretch the rubber band. You'll notice that the near dot doesn't move away from the main dot nearly as much as the far dot. The expansion of the universe works in the exact same way.
Inversely, gravity gets stronger the closer 2 objects are. Like magnets.
Andromeda, for example, is close enough to where the gravitational pull of our 2 galaxies is significantly greater than the expansion of the universe so our 2 galaxies will eventually collide in the distant future. However, anything outside our local group of galaxies is far enough away where the expansion of the universe is significantly stronger so we will NEVER collide with anything out there.
DarkTheImmortal t1_iujzpxg wrote
Reply to Alleged Paul Pelosi attacker charged with assault and attempted kidnapping | CNN Politics by electromagneticpost
Can they throw in domestic terrorism?
DarkTheImmortal t1_jeduiwg wrote
Reply to comment by mfb- in ELi5 If the universe is expanding, what is it expanding into? by cashmoneyhash
The 2nd part you point out you skipped over something. I said an infinite universe can expand AND remain the same size at the same time. To have both of those seemingly contradictory properties at the same time requires an infinite universe. An infinite volume can get bigger, but it's still infinite.