Well, I open my eyes and I see things. I've seen spirits moving through the walls. I've seen a vortex coming through the wall. I've seen amorphous little balls of light bouncing all around in the front yard through the window. I've seen giant bugs on the floor. I was in a hotel room in Amarillo, Texas, and all I remember is standing on the bed and seeing the whole wall in front of me filled with lights that were [makes popping sound] popping like popcorn out of the wall. Then I'll wake up and I go "Wow, I was standing on my bed and staring at this wall."
It can be converted to heat, though, rendering it useless, right?
Id like to bring up a debate about dark energy, yes the universe is accelerating for some unforeseen reason, but you don't make up another force off the fly to explain it. It annoys me how other theories against it are rarely publicized. For example there is one theory that states that some sort of release of energy in out section of the universe created an outward pressure wave that is moving everything apart, and because of the scale of this wave, we can't notice a difference. Sure its just an unproven hypothesis, but its just are reasonable as dark energy.
one variation of string theory tries to explain this by making the claim that the universe is NOT a closed system and that our universe is wedged between other universes of higher dimensions like a slice of bread in a loaf. gravity is said to be able to freely move between universes and the cause of our increasing expansion is said to be due to gravitational effects of the other universes. which sounds pretty cool but unfortunately this, and basically all of string theory, hasnt gotten much steam because, while these predictions may be mathematically sound, none of them can be verified by experiment.
either youre dumb or the science shows you watch are
I'm too skeptical to be a scientist.
you wouldnt be skeptical if you were a scientist
Chicken or the egg.
imagine yourself throwing a ball into the air. the event of you throwing the ball is analogous to the big bang and the ball rising is analogous to the expansion of the universe. the laws of physics would dictate that the ball would slow down after a certain while, stop and then fall back to earth or, if youre superman, move fast enough that gravity cant slow it down enough for it to fall back within the time frame of the experiment (like a rocket). now imagine that the ball starts accelerating instead. it keeps moving up faster and faster unperturbed by the gravity of the earth. its a weird, inexplicable scenario but that is essentially what is happening with the expansion of the universe.
yes but the ball is at one point accelerating, very close to the beginning when it was first "infused" with energy. im saying, what if the "bang" was so incredible that matter is still in that very initial state when it FIRST starts accelerating.
"I'll go," said Chagataev. "But what will I do there? Build socialism?"
"What else?" said the secretary.
the only time the ball is accelerating upwards is while it is still in the hand. the moment it leaves the hand, gravity becomes the only force acting on it and it decelerates. so if youre going with that analogy, your hypothesis implies that the bang is not yet over and the force that is being exerted by the bang is accelerating the universe. its an interesting way to think about the dilemma but the problem is that if the bang was indeed still going on, the universe would not be as cool as it is today (about 2 degrees above absolute zero). the energy required to accelerate the expansion of the universe is immense and if that energy existed in the forms that we are familiar with (heat, etc) the universe would still be searing hot. obviously we dont observe such an excess of energy because we wouldnt exist otherwise, and the fact that we cant observe it warrants the use of 'dark' in 'dark energy'.
i smile every time the word bang is mentioned while reading the above post
slightly related: i just found my dk space encyclopaedia which i got when i was 8. its probably the book ive read the most number of times.
"Recent research by Christos Tsagas, a cosmologist at Aristotle University of Thessaloniki in Greece, has argued that it's likely that the accelerated expansion of the universe is an illusion caused by the relative motion of us to the rest of the universe. The peer reviewed journal entry cites data showing that the 2.5 billion ly wide region of space we are inside of is moving very quickly relative to everything around it. If his theory is confirmed, then dark energy would not exist (but the "dark flow" still might). His research can be found in the journal, Physical Review D."
Pokemon moves cause universal expansion, obviously
why is our part of the universe moving quickly
theres an interesting point here that i forgot to mention. when einstein was formulating his theory of general relativity, he found that his original equations did not predict a static universe i.e. a universe that is not expanding or contracting. to fix this supposed error, he fucked around with his equations and added a new variable called a 'cosmological constant' that made the universe static. however after hubble announced his discoveries, einstein disowned the cosmological constant and later called it his 'biggest blunder', since he thought he could've predicted an expanding universe from his original equations alone before hubble observed it. HOWEVER since the discovery that the universe was accelerating in the late 1990s there has been renewed interest in using the cosmological constant to account for the universe's acceleration and dark matter (which i might talk about later).but getting back to hubble. what he discovered was that not only were there other galaxies, but the stars in other galaxies were highly red-shifted. furthermore, the stars in galaxies further away were MORE red-shifted than the stars in relatively closer galaxies. and if this phenomenon was only limited to a certain patch of sky then it would've been mind-blowing enough, but this red-shifting of stars in other galaxies was observed everywhere. in every region of the three hundred and sixty degrees of space that surrounds the earth, galaxies were found to be moving away from us. either our galaxy smells really bad OR the universe is expanding like a three dimensional analogue of a balloon. this may seem like a common fact now but back in the 1920s it was astonishing, and it completely revolutionised our picture of the universe.
yet another anecdote proving the near infallibility of maths when it comes to describing the world around us.