skoobadoop wrote...
Arizth wrote...
skoobadoop wrote...
Because, like, do you really expect me to be able to comprehend science?
Science sez we, as a galaxy, are actually floating through a shooting gallery of horrific cosmic events that at any point may come tearing through our spiral, burning planets and detonating suns and more or less ending all life in the galaxy.
Like NeoStriker said a few pages back, I know an apocalypse is going to happen. The question simply remains, When?
I try not to think about it, since there's pretty much nothing I can do to stop a Nova/Hypervelocity Star/Gamma Ray Burster/Really anything flying around out there.
But if the universe is constantly expanding, aren't we moving away from everything else? So every moment we are safer than before. Yay!
Not exactly correct.
The universe is expanding, true, but it occurs at a very slow rate.
According to Nasa, the estimated rate of expansion is somewhere between 50 and 100 kilometers per second per megaparsec, with the more recent experiments yielding values between 66 and 82 (KMS/MPS), or about 237,600 to 295,200 kph.
At a local scale, this seems to be quite fast, but remember that the rock we're on shoots through space at an average of 67,108 mph, or about 108,000 kph, and our sun rockets along at about 559,324 mph, or about 900,145 kph.
And these values aren't even that fast, compared to some of the stuff out there.
Assuming the universe is functionally unlimited and populated by galactic spirals, at any point in time we run a rather terrifying risk of smacking into...something. Meteorites, Asteroids, rogue Planetoids or Black holes, Nova or Supernova waves, and gods know what else is relaxing in the depths of space, waiting for something to fly into it at hypervelocity.
Like I said, I have no doubt an apocalypse will occur, at some point. Hell, assuming NOTHING else, our sun will go Red Giant and consume the inner planets in about 5 billion years.
If nothing else.