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Why?

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Actually this isn't a fact, it is a supposition of some models of expansion. What we DO know is that everything is moving away from us. From that a theory of an expanding universe has been developed. However, since nobody really knows what the universe is like, we don't know how it's expanding. there are various models to choose from.

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Look, the universe is weird, really, amazingly, mind-bogglingly weird. It works by totally separate set of rules that we barely understand. We know nothing for sure about how the universe actually works, or why. We have a lot of ideas, theories and models, but we don't know what is right.

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Without a beginning there can be no present that's why.

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Merriam-Webster gives a different definition.

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Actually, the theory with the most predictive power is the most valid one.

All else being equal between two theories, the one with the least assumptions is the more attractive one.

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ORIGINAL: HeatherMcLeather

We know that the universe is expanding, and if you travel away from a point along a curved path, you will eventually end up where you began.

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ORIGINAL: Aswad

Merriam-Webster gives a different definition. Wiktionary notes it as uncommon in reference to modern times. Norwegian is a demonym, while norseman is an ethnonym, and correct as used. Norse-American is a dated word, comparable to the word African-American, and illustrative of the validity of making the reference, and the reason for wondering if you admit the validity of the latter of those two. Scandinavian is both demonymic and ethnonymic, but would have been more cumbersome in the contested text.

And, yes, I'm generally a civil fella, so with the above, the defense rests.

Further insults can be filed under appendix ZZzz..

Health,
al-Aswad.

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ORIGINAL: Arpig
It's not a theory, its a random thought that popped into her head, ...

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ORIGINAL: HeatherMcLeather

A few weeks ago Hanners, Suze and I were talking about space and time <yes, we do talk about some strange things>, and Hanners mentioned that she had heard some scientist on the radio talking about how spacetime was curved. That struck me as interesting and significant idea, so it stuck in my head. Then, on this thread http://www.collarchat.com/m_3800352/tm.htm somebody asked what had happened before the Big Bang and I had this sudden crazy idea.

We know that the universe is expanding, and if you travel away from a point along a curved path, you will eventually end up where you began. So maybe, the universe expands until it curves back in on itself and collapses into the singularity thus causing a new Big Bang. That’s not my crazy idea; I’ve heard that idea before somewhere or other.

My idea is that if time is curved as well, then the universe will eventually come around to when it began as well. So what was before the Big Bang was the universe. Not a different universe, but this one. There is only one Big Bang, only one universe, happening over and over again on a loop. Sort of like a cosmic Groundhog Day

This brings up all sorts of interesting ideas and questions, like “Does it repeat itself exactly, or is it different each time?” and “Have I existed before?”

Now you know why I don’t need to do drugs. [:D]

So, what do you think about my crazy idea?

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ORIGINAL: HeatherMcLeather

A few weeks ago Hanners, Suze and I were talking about space and time <yes, we do talk about some strange things>, and Hanners mentioned that she had heard some scientist on the radio talking about how spacetime was curved. That struck me as interesting and significant idea, so it stuck in my head. Then, on this thread http://www.collarchat.com/m_3800352/tm.htm somebody asked what had happened before the Big Bang and I had this sudden crazy idea.

We know that the universe is expanding, and if you travel away from a point along a curved path, you will eventually end up where you began. So maybe, the universe expands until it curves back in on itself and collapses into the singularity thus causing a new Big Bang. That’s not my crazy idea; I’ve heard that idea before somewhere or other.

My idea is that if time is curved as well, then the universe will eventually come around to when it began as well. So what was before the Big Bang was the universe. Not a different universe, but this one. There is only one Big Bang, only one universe, happening over and over again on a loop. Sort of like a cosmic Groundhog Day

This brings up all sorts of interesting ideas and questions, like “Does it repeat itself exactly, or is it different each time?” and “Have I existed before?”

Now you know why I don’t need to do drugs. [:D]

So, what do you think about my crazy idea?

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ORIGINAL: Icarys
I think we'll find as we actually get further into space (if we make it that is without killing everything on the planet) we'll see things that we could have never have predicted.

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I actually was the very first person to postulate this concept (1977 if I recall).

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ORIGINAL: HeatherMcLeather

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Without a beginning there can be no present that's why.

I don't see the connection. What does the present have to do with a beginning?

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(Just a quick afterthought.....you should probably do drugs).