SuperRad
Smash Master
i didn't think it was funny until "yo home to bel air"
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What topic?Please stay on topic~
I used to love that show.no i cant
i just remember invader zim
Nobody knows.hyuga i saw ur post on page 1
can u explain to me how big space is
8/10, though I still dont get how relativity doesnt keep the universe at 2*13.6 Billion light years across. Maybe Ill understand when I take a class on it. (Is it because no energy is being put into accelerating the objects past the speed of light?)That was a Hitchhiker's Guide to the Galaxy quote, though accurate nonetheless.
The observable universe is about 100 billion light years across. You might think that it should only be 2*13.6 billion light years across since the universe is ~13.6 billion years old, and that would be the farthest apart that 2 photons could get in that time. However, space itself is expanding, and at an ever-increasing rate at that, so the distance between those two photons has expanded in that time. But, we can only physically see about 16 billion light years away because of this expansion, that is to say, beyond that, the sum total of the expansion of space between there and here is greater than the speed of light. We are causally disconnected from anything past that: no event there can affect events here and vice versa. Just for reference, our galaxy is about 100,000 light years across. So the universe is about a million of our galaxy lined up end to end.
Now, this is only our own universe we're talking about. There could be entire other causally disconnected universes outside of our own, making up a multiverse. I would say that in my experience, most cosmologists think it is likely that they do exist, even if only because there is no reason to believe they could not exist. I stress that this is just a guess though, and not a full-fledged belief, because we acknowledge that there is no known way to test this directly.
On second thought, youd best watch yo moufCaptain N
rofl Okay whatever Sheridan, you and I both know the universe expands because God wants it to.Chok:
If you've ever heard of "dark energy," that's what's making the universe expand. Only we don't know what dark energy is or where it comes from. We just know about how much there is in the universe. I'll explain: the reason we know dark energy is there, is that we observe the universe to be very close to flat. A "flat universe" is one that is on the border between expanding forever and expanding but eventually contracting again. That flatness requires a certain energy density in the universe to happen. About 4% of the mass-energy of the universe is 'normal matter,' like stars, planets, dust, etc. Then 21% or so is 'dark matter,' which is mass that we observe to be there but we have no idea what it is because it apparently doesn't interact electromagnetically (aka, you can't "see" it because it doesn't talk to photons). And the rest is dark energy. So dark energy is really just whatever it is that makes up the rest of the balance.
hahahahahahahahahahaharofl Okay whatever Sheridan, you and I both know the universe expands because God wants it to.
He doesn't need to pay me to switch his avatar. =pI still think Atlus should MM th0rn at pound 4, for the right to use the godzilla avatar.