(April 4, 2014 at 1:36 pm)archangle Wrote:(April 4, 2014 at 1:26 pm)Fromper Wrote: Interesting. I'm no expert on this stuff, but as I said, I recently read Hawking's "A Brief History of Time". As I understand what I read there, there is no "edge" to the universe, but I thought the curvature just meant that if you could travel faster than light in one direction, you'd eventually end up back where you started. Also, if you were traveling faster than light, then you'd be traveling 4 dimensions, not just 3, so you could arrive back where you started before you actually left.
But I didn't realize that there would be more out there than we're capable of observing due to light speed limitations.
thats right.
They don't know yet. They are still looking. They aint even sure that those galaxies so far away aint our own milky way 10 billion years ago.
remember they know less than 10% of the stuff out there. Everything we know is a human perceptive only.
Ok, the statement I bolded kinda blows my mind. I had assumed we couldn't look back at our own galaxy at an earlier time, because the rate of expansion of the universe has to be slower than light, so the light from our own galaxy 10 billion years ago would have reached our current point in space before we did.
But the idea that the curvature of the universe would allow us to look back at our own galaxy from the opposite direction of the one we took to get here during universal expansion hadn't occurred to me. But if that were the case, wouldn't that make the universe smaller than expected, since we'd be seeing the same part of space when looking really far away in two opposite directions?
That's MISTER Godless Vegetarian Tree Hugging Hippie Liberal to you.
