Author Topic: does space go on forever (Read 6050 times)

Nonnel · February 28, 2016, 04:24:16 PM

Quote from: Ipquarx on February 28, 2016, 03:07:03 PM

It's not insane at all, assuming the universe is infinite. There's nothing about it that doesn't work.
If there was infinite space and finite matter evenly distributed (Because why wouldn't it be, at least at first?) then the density of matter in the universe would be 0.

how did you get that it's distributed evenly across infinity
that makes zero sense

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Ducky duck · February 28, 2016, 04:26:18 PM

Quote from: Ipquarx on February 28, 2016, 04:23:55 PM

instead of saying "it would take 1000 light years" you should say "it would take light 1000 years to travel"

Because it sounds cooler when you say light years
also it would take longer than 1000 years because there is no current way to travel the speed of light without dying.

BluetoothBoy · February 28, 2016, 04:33:23 PM

Quote from: Ducky duck on February 28, 2016, 04:26:18 PM

Because it sounds cooler when you say light years
also it would take longer than 1000 years because there is no current way to travel the speed of light without dying.

Just because it sounds cooler doesn't make it correct.

Also, there is currently just no way to travel the speed of light, period, dying or not. Theoretically, as long as the acceleration is kept within a reasonable range, we could travel at the speed of light unaffected in a vacuum.

kahnuu · February 28, 2016, 09:45:01 PM

who cares

User was banned for this post

Ipquarx · February 28, 2016, 10:00:15 PM

Quote from: Nonnel on February 28, 2016, 04:24:16 PM

how did you get that it's distributed evenly across infinity
that makes zero sense

okay so one thing we know for sure about the universe is that it started off with all matter and energy completely evenly distributed. we know that for sure.
so if space was infinite, and matter was finite, we can use that property I used earlier (any finite number divided by infinity = 0) to calculate that the density would have to be 0. That is, density = mass / volume, mass is finite and volume is infinite.

Quote from: kahnuu on February 28, 2016, 09:45:01 PM