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EvC Forum ⇒ Science Forums ⇒ Big Bang and Cosmology ⇒

The accelerating expanding universe

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Author Topic:   The accelerating expanding universe
Panda
Member (Idle past 3740 days)
Posts: 2688
From: UK
Joined: 10-04-2010

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Message 31 of 149 (597668)
12-23-2010 7:33 AM 		Reply to: Message 29 by break
12-23-2010 6:18 AM

break writes:
​
I was hoping that CaveDiver - or anyone else - could answer a question I have regarding the expansion of the Universe.
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My understanding so far is that the Universe is not expanding because all objects are explosively speeding away from each other but rather, because space itself is expanding.
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So my question would be, how do we know this ? How can we tell space itself is expanding ? What observations led us to this conclusion ? What is the difference between objects speeding away from us and objects being mostly stationary inside an expanding space and how can we tell the later than the former is what is happening in our universe ?
I expect that your question (or five) will be considered to be "doing your homework for you".
I would suggest reading articles from the interwebs and then try to narrow down your focus to less broad questions.
​
Remember: Google is your friend.
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 Message 29 by break, posted 12-23-2010 6:18 AM break has replied
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 Message 34 by break, posted 12-23-2010 8:40 AM Panda has replied
  
Panda
Member (Idle past 3740 days)
Posts: 2688
From: UK
Joined: 10-04-2010

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Message 35 of 149 (597673)
12-23-2010 8:51 AM 		Reply to: Message 34 by break
12-23-2010 8:40 AM

break writes:
​
I am not being confrontational or argumentative and I apologize if my post came across as such.
I didn't feel any "bad vibes".
​
Unfortunately, my knowledge of cosmology is sadly lacking, so hopefully others can guide you to good sources of information (as Dogmafood has).
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