Science

MyshkinCommaPrince

(611 posts)

3. Yes, the expansion of space

Thu Jul 18, 2013, 04:00 PM

Jul 2013

That's what Brian Green was on about, when he threw me into my current confusion. I think I grasp what he's saying, and I understand that we can form statistical projections about how things might be out there. Green is dealing with the fact that the universe we see out there isn't what it's really like now, but only with regard to the expansion and motion away from us.

I need one of those Keanu Reeves meme thingies. "What if a wave of destruction is sweeping through space toward us, but we can't see it yet?" Something like that.

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Astronomical distances, light speed, and uncertainty [View all] MyshkinCommaPrince Jul 2013 OP

I think you are on the right track - as an astronomy buff for years, it struck me very young NRaleighLiberal Jul 2013 #1

Even if you have had astronomy and physics it's mind bending. longship Jul 2013 #2

Yes, the expansion of space MyshkinCommaPrince Jul 2013 #3

Well, a couple of assumptions help. longship Jul 2013 #4

I don't think the concept is being 'ignored' so to speak... Wounded Bear Jul 2013 #5

Aha. MyshkinCommaPrince Jul 2013 #8

He may have brought it up in his 'Cosmos' series... Wounded Bear Jul 2013 #9

So we can be reasonably certain MyshkinCommaPrince Jul 2013 #6

"Can anyone shed light on the matter for me?" Spitfire of ATJ Jul 2013 #7

oh, I see what you did there... progressoid Jul 2013 #12

...if there's space. Spitfire of ATJ Jul 2013 #13

Distance Measurement in Astronomy DreamGypsy Jul 2013 #10

That does help. Thank you. MyshkinCommaPrince Jul 2013 #11

You are right and you are wrong.... RagAss Jul 2013 #14

So, umm. MyshkinCommaPrince Jul 2013 #15

I think we understand time very well. RagAss Jul 2013 #16

I may very well have misunderstood what I've read. MyshkinCommaPrince Jul 2013 #17

Science doesn't need to bother itself with such considerations. RagAss Jul 2013 #18

Okay, good. MyshkinCommaPrince Jul 2013 #19