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Thread: How many other sun like stars are there in the universe where the planets rotating

  1. #1
    Join Date
    Aug 2004

    How many other sun like stars are there in the universe where the planets rotating

    Like our solar system how many sun like stars are there nearby our solar system. The big hot stars which are on the farthest distance from us are too hot than sun? are they formed like the sun formed? they are having H and He like our sun is? is a chain of planets rotating it? are they big in number than in our solar system?

  2. #2
    There's generally no correlation between star temperature and distance except in some parts of the galaxy where the O/B hottest stars tend to be found (spirals arms).

    O/B stars are usually ackowledged to be too short lived for planets to form (25 solar mass star lives approx 7million yrs), planets that have been found so far tend to be around G/K class stars with lives in the tens of billions of yrs.

    All stars form in the same way as the sun, from the collapse of a large interstellar cloud which gravitationally contracts and heats.

  3. #3
    Join Date
    Aug 2004
    thanks ss002 for the reply. do you think in the universe whether there are number of hot stars gathered in one zone, so are they the primary framed when the big bang was happened and some parts are detached and thrown away in the rest space. !

  4. #4
    The current hottest stars (~25K-40K kelvin) didn't form until the last 100 million yrs or so , the only stars around now that where possibly there sometime close to the bigbang are the very smal mass K/M class stars, and even they are likely to to Population 2 (second generation) rather than the very earliest population 3 stars (1st generation, but never yet been discovered).

    The O/B stars are found in regions of dense clouds gas, these gas clouds are usually formed in the galactic plane, in the same way as the material that formed the planets gathered in the equatorial plane of the solar system.

    I dont know of any isolated star formation systems that currently exist that aren't associated with a galaxy directly, either within the galaxy or oribiting it, but its possible that this happened in the early universe before galaxies formed.

  5. #5
    Join Date
    Aug 2004
    yes thanks, do you agree that there were multiple big bangs held, or it is confirm that only one bigbang event created this scinario.

  6. #6
    The stars were not created at the time of the Big Bang. Even the earliest ones didn't form until millions of years later.

    Stars are created whenever a cloud of gas (and dust) gets dense enough for its self-gravitation to cause it to collapse into a cluster of stars. That's happening right now in the Orion and Eagle Nebulas, for example.

  7. #7
    Join Date
    Jan 2005
    Pardon the self-link, but I recently started a thread very relevant with this topic. You won't get an answer "Beyond Reasonable Doubt", but I do attempt an honest speculation to the best of my amateur knowledge - with citation/links available

  8. #8
    Join Date
    Aug 2004
    thanks filrabat for the linking that topic here.

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