This is just some musings I need to get out and to get known. I know a lot of this isn't fact, it's all theory, but...damn. Thinking about the subject below has been a real eye-opener to me. Please read it, I know it's long.
So, for the past few days I've been studying the universe. Nothing really special, but...you know. Just what's around us. It's really opened my mind to a lot, and it was a lot of information to process in such a short time.
I guess that's why I'm gonna type it out here. To try to collect and place my thoughts.
Let's start with Earth.
[link]See that? Pretty discernable. That's earth, taken from the Moon's perspective. Sheds a new light on what we look like from the outside, wrapped up warm in our blanket of gorgeous clouds...
Now take a look at this:
[link]See that picture? Nothin' special, huh? Except...you see that little blue dot in the middle of that sunbeam? Yup. dA, that's us. That is Earth 4 billion miles (6 billion kilometers) away from home. This was taken in 1990 by Voyager I, and it's the real eye opener. When we look up at the sky, we see other planets as stars. But when someone outside hypothetically stares up....that is all they would see. A blue star.
Just...wow.
Now kids, let's see what'll happen in the distant future! Somewhat related.
600,000,000 to 3,500,000,000 (estimates vary): Slow but steady increase in solar luminosity will cause Earth's oceans to evaporate, leaving it inhospitable to life.
^That's scary enough, that we've only got a few billion years left on earth, given we don't get smacked by a surprise meteor. Life started so late in the Sun's cycle, and...boom. Out of ~8 billion years, life on Earth will only have been around 4.5 billion years....Damn.
1,000,000,000: The last total solar eclipse on Earth will occur, due to the Moon's orbit gradually becoming larger and spreading away from the earth.
And we won't even get to see it...
3,000,000,000: The Andromeda Galaxy and our Milky Way Galaxy are predicted to collide.
I've heard the scientists talking about this. They say it could rip our galaxy to poo. Or it could just be one SUPER GALAXY. BUT. If it doesn't~!
7,590,000,000: The red giant Sun engulfs the Earth.
And...poof. No more proof we ever existed...
17,000,000,000: The Sun becomes a black dwarf.
This Black Dwarf thing is just the core of the star after it's died and cooled. What they say'll happen is that once the sun goes batshit and eats us, it'll shed its outer coating, causing a nebula. It's pretty and all, but nobody'll be around to see it. D: Anyway, once that happens, it's just this superheated core, which would be white, that eventually...cools off and becomes nothing. If anyone's left at all and are watching this...well, they wouldn't have the foggiest clue of what even resided nearby. Seriously, bye bye Mercury, Venus, Earth, and probably Mars, too.
Irony here is they say mars would be inhabitable if it were JUST slightly closer....for a little while, life will be able to nestle down in Mars' surface. Go figure...
30,000,000,000: Earliest possible date for the universe to collapse in the hypothetical scenario known as the Big Crunch.
This one's scary. Big Crunch is a nice way to say the Universe may or may not just collapse onto itself. What happens after is even less known, but...well, I'll explain those scenarios later. But let's say time goes on a little longer, eh?
100,000,000,000,000 to 1,000,000,000,000,000 (one quadrillion): The Big Freeze according to many cosmologists. Intelligent life existing then may flee to other universes, as suggested by the physicist Michio Kaku. Beginning of the Degenerate Era of our universe. End of normal star formation and normal stars in the Milky Way/M31 super-galaxy. New stars formed only via brown dwarf collisions every hundred billion years or so.
OH OKAY. This was much happier than the last one. The only positive in that was the possibility of other universes, but I want to doubt that. Maybe because Anakira's brain is so tiny, and the universe is.....just....endless. Anyway, Big Freeze is the nice way of saying that nothing can sustain heat any longer due to its vast and infinite size, and thus, everything dies. No new stars. The only stars that form are when small ones collide, which will be once....oh, say...NEVER. From here, planets will be quite easily smacked out of their orbit, or they'll just...fall. A true bottomless pit. But that's okay, because everything will be sucked into huge black holes. This will be called the Black Hole Era. This'll last a few forevers...
But oh no, this isn't the end, yet. You'd think it is, but IT GETS BETTER.
10(100) (one googol): If the theory of black hole evaporation is correct, it is predicted by many astronomers that all the black holes in our universe will have evaporated by around this year, the beginning of the Dark Era of our universe, unless proton decay does not occur.
ANAKIRA WHAT DOES THAT MEAN.
What THIS means is that if scientists are right, SUBATOMIC PARTICLES break up into EVEN SMALLER PIECES. Everything gets ripped to poo. Again. More.
BUT OH HO, WHAT IF THAT DOESN'T HAPPEN!? Is there some hope for us all, Anakira?
In the event the proton does not decay as described above, the degenerate era will last longer, and will overlap the black hole era. In a timescale of approximately 1065 years, apparently rigid objects such as rocks will be able to rearrange their atoms and molecules via quantum tunneling, behaving as a liquid does, but more slowly. However, the proton is still expected to decay, for example via processes involving virtual black holes, with a half-life of under 10(200) years.
Well, that sounds pretty cool. I wanna do that...except...WAIT. CRAP. C'MON HERE. That isn't fair. ._.
Except...well, just craptacular. They pulled "well just kidding" on us, it's going to happen anyway. and after that...
After all the black holes have evaporated (and after all the ordinary matter made of protons has disintegrated, if protons are unstable), the universe will be nearly empty. Photons, neutrinos, electrons and positrons will fly from place to place, hardly ever encountering each other.
By this era, with only very diffuse matter remaining, activity in the universe will have tailed off dramatically (compared with previous eras), with very low energy levels and very large time scales. Electrons and positrons drifting through space will encounter one another and occasionally form positronium atoms. These structures are unstable, however, and their constituent particles must eventually annihilate. Other low-level annihilation events will also take place, albeit very slowly.
The universe now reaches an extremely low-energy state. What happens after this is speculative. It's possible that a Big Rip event may occur far off into the future. Also, the universe may enter a second inflationary epoch, or, assuming that the current vacuum state is a false vacuum, the vacuum may decay into a lower-energy state. Finally, the universe may settle into this state forever, achieving true heat death.
That...is just depressing, isn't it. Basic gist is that rocks fall, everything dies. Everything. Including the universe. That is to say if the Big Rip doesn't happen first, which is just everything ripping apart and dying ANYWAY.
So pretty much, the universe will just become this huge skeleton, dead and cold in...the space of....space. Just as life lives and dies, and even has a prime youth, so too does the universe. Isn't that just amazing?
Live it up, guys. We're in the prime of the universe. We're in the youth, the prime of the sun, the solar system, and everything around. Earth is really one in a billion, and we won't be around much longer. Go outside tonight, go look at the stars. They won't be around either one day. Appreciate life. Smile. Because once it's done, its done. No matter what kind of time capsule we build, it's gone, boo. All gone. The sound of a piano, a flute, the soft singing human voice...all the art and creativity, and everything else that makes us special is...just a blink in the universe. Just a flicker, a flash of light that nobody will remember.
How ironic; no matter much we will strive to live on forever...nobody will be around to find us.
--Anakira