How old is our galaxy

Discussion in 'Astronomy, Exobiology, & Cosmology' started by timojin, Aug 19, 2017.

  1. timojin Valued Senior Member

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    How old are other galaxy since we are recipient of other galaxy

    This process preferentially transfers gas to larger galaxies, owing to their stronger gravity. For a galaxy such as our Milky Way at the present day, around half of its stars were formed from gas enriched in other galaxies. Given that Earth is made of these heavy elements, we are all part intergalactic travelers.

    http://www.sciencemag.org/about/science-licenses-journal-article-reuse
     
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  3. James R Just this guy, you know? Staff Member

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    Our galaxy is at least 4.5 billion years old, which is the age of the Earth. It can't be older than 13.8 billions years, which is how long ago the big bang was.

    It is thought that the Milky Way is about 13.2 billion years old.
     
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  5. timojin Valued Senior Member

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    Is this not an implication that the so called Big Bang was actually a big collapse ?
     
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  7. exchemist Valued Senior Member

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    No. Why do you think this?
     
  8. timojin Valued Senior Member

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    At time zero what was there ?
    Was there mass was there energy ?
     
  9. DaveC426913 Valued Senior Member

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    superstring01 likes this.
  10. timojin Valued Senior Member

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  11. DaveC426913 Valued Senior Member

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    I guess you didn't read the article?

    T=10^-43 is in seconds.

    T=0 is the same at all scales.
     
  12. timojin Valued Senior Member

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    I have seen it more the one time, what amazes me is the 10-43 second which seems to me Hmmmmm but never so . In my question there must have been a large amount of matter to produce the Millions or galaxies and to expand such large amount of matter there must be a hell of amount of energy , so what did ve have at time zero ?
    If we had large volume of gas there must have been a large cooling effect in the condensation and then the release of energy went to the expansion of the universe.
     
  13. origin Trump is the best argument against a democracy. Valued Senior Member

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    There was no gas until the universe was about 380,000 years old. From about 1 second to about 380,000 years matter was in the form of plasma. Before 1 second there was no matter at all.
     
  14. timojin Valued Senior Member

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    Give something better than that " there was no matter at all "
    Plasma:
    the four fundamental states of matter, while the others are solid, liquid, and gas. Unlike these three states of matter, plasma does not naturally exist on the Earth under normal surface conditions, and can only be artificially generated from neutral gases.
    Find me some better description.
     
  15. DaveC426913 Valued Senior Member

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    Not even a 'please'...

    :waves around room: Who is in charge of stepping & fetching for Timojin today? Anyone? Anyone? Bueller? Bueller?

    Please Register or Log in to view the hidden image!

     
  16. origin Trump is the best argument against a democracy. Valued Senior Member

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    No, we will leave that for you to look up.
    Of plasma? How about the sun?
     
  17. timojin Valued Senior Member

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    I don't understand what are you implying.
     
  18. timojin Valued Senior Member

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  19. DaveC426913 Valued Senior Member

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    Considering that you're asking questions and we're obliging you, these can be interpreted as kind of rude:
    They imply that you expect others to do the legwork to satisfy your curiosity.

    We're pointing you in the right direction for answers, there's nothing stopping you from following them up with your own searching.
     
  20. timojin Valued Senior Member

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  21. timojin Valued Senior Member

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    Reply to ORIGIN

    Of plasma? How about the sun?[/QUOTE]

    From about 1 second to about 380,000 years matter was in the form of plasma. IS NOT PLASMA AN IONIZED GAS

    If "Before 1 second there was no matter at all." would you agree plasma is an ionized ? and to ionize gas you need very high temperature or voltage to strip electrons.
    So why do you say there was no matter ?
    So in order to convert plasma to gas you need to remove the heat[/QUOTE]
     
  22. DaveC426913 Valued Senior Member

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    You've dropped a closing square bracket on [ / QUOTE
    So the software can't find the end of the actual quote.

    If you are still able to edit those posts, you can go back and add the ] on the end.And it will fix the post.

    Also, you will find there's now an extra [ / QUOTE ] added to the very end of your post. Remove it.

    Quotes are tricky. I spend more time cleaning them up than actually writing.
     
  23. timojin Valued Senior Member

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    Thank you for that. By the way I can definitively look up my self I am not asking any body to look up for me , I am posting in an askin form to to present a discussion.
     

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