Cosmology and Astronomy

Discussion in 'Science' started by waltky, Jan 12, 2013.

  1. MrNick

    MrNick Banned

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    I don't care...

    I'm not your secretary...

    You dispute my assertions, great - go look for yourself...

    You act like I'm just making (*)(*)(*)(*) up.... I could easily list citations, which you would dispute but that is besides the point...

    I purposely don't post citations because I WANT people to look into this stuff, giving you one or two examples doesn't do any justice.
     
  2. tecoyah

    tecoyah Well-Known Member Past Donor

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    And thus have you lost the debate, primarily because you refuse to even begin it choosing instead to state your opinions and then not bothering to back them up. Also however, because the opinions you display are extremely easy to dismiss off hand due to the unlikely nature and lack of supporting data.

    One is left to wonder why you even bother to play in a debate forum...you really suck at it.
     
  3. OldManOnFire

    OldManOnFire Well-Known Member

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    You're on this thread arguing with everyone about your 'opinions' and your 'beliefs' all of which are personal to you. If we're talking philosophy then hearing your opinions is fine but when we're talking about whether tangible stuff exists or not, this is when we need to discuss evidence. Many of us can hope, or anticipate, the existence of intelligent life outside of Earth, and we can even delineate why we think this...like using Drake's Equation, but until we have some hard and repeatable evidence, the discussion is just personal opinions and no one is right or wrong...
     
  4. MrNick

    MrNick Banned

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    Believe what you like - that is fine... You're the one arguing with me...

    (*)(*)(*)(*), your ilk wouldn't even be satisfied if you met an alien - and once you did you would kill the being to study it, then you wonder why they don't say hi?
     
  5. MrNick

    MrNick Banned

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    Yeah, people like you want an alien so you can kill it and dissect it.

    This subject is indeed philosophy.... Why the hell would an alien land on the White House lawn? or make contact with humanity?

    We're not special beings, we will kill it and study it or study it and then kill it...

    If I'm smart enough to realize that then what do you think these beings understand?

    Go look up "The Battle of LA"...

    See what happened there....

    We are generally hostile people/creatures...
     
  6. tecoyah

    tecoyah Well-Known Member Past Donor

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    Believe it or not...I think I once "Saw" a UFO:

    When I was about 12 yrs. old I awoke around 2am because I heard/felt something. It was sorta like a vibrating hum but not actually audible...very hard to put into words. One by one all my brothers and sisters as well as Mom woke up and we searched the house trying to figure out where it came from. After about an hour I went outside because it was literally everywhere and stayed the same outside. Everyone ended up in the yard and no one could explain what was happening, or even if ANYTHING was happening. Just before we decided to go back inside to sleep I saw something in the sky and pointed it out to everyone. It was not a light up there....it was the lack of light. There was an area of the sky with no stars about the size of our moon, maybe smaller. Whatever it was it was literally pure black and stationary....it never moved. We all stared at it and occasionally lost it only to find it again in the same damn place.

    Eventually the sky began to lighten in the pre-dawn and the unheard sound stopped. We could no longer locate the dark spot in the sky.

    To this day I believe we "Saw" a UFO...and no, I would not kill any creature let alone chop it up for experiment.
     
  7. waltky

    waltky Well-Known Member

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    Understanding of formation of early universe may lay with ‘Green Pea’ Galaxies...
    :confusion:
    ‘Green Pea’ Galaxies May Hold Key to Understanding Early Universe
    January 14, 2016 - “Green pea” galaxies, which are small, round and green, may shed light on the formation of the early universe, according to a new study.
     
  8. waltky

    waltky Well-Known Member

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    That far from it's sun, I wonder why it hasn't gravitated toward another solar system?...
    :confusion:
    Astronomers Discover ‘Widest’ Solar System
    January 27, 2016 - Astronomers have discovered the largest solar system found so far.
     
  9. Aleksander Ulyanov

    Aleksander Ulyanov Well-Known Member

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    Assuming my calculations are correct 1 trillion kilometers is considerably less than 1 light year and the closest star to us is over 4 light years away, which is about the average distance between stars unless they are in a very tight cluster. It may indeed be very distant from it's sun, but not far enough to be grabbed by another star by some distance
     
  10. Aleksander Ulyanov

    Aleksander Ulyanov Well-Known Member

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  11. waltky

    waltky Well-Known Member

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    ... and the closest star to us is over 4 light years away...

    Thought the Sun was our closest star...

    ... at 93 million miles away...

    ... Uncle Ferd says ya might wanna do some re-calculatin'.
     
  12. OldManOnFire

    OldManOnFire Well-Known Member

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    It's hard for most people to fathom the vast distances of our galaxy and Universe...there's a lot of space out there!
     
  13. DarkDaimon

    DarkDaimon Well-Known Member

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    Very true! It is amazing to think that the distance between the Earth and the Moon can hold all 8 planets of our solar system (and Pluto too!)
     
  14. WillReadmore

    WillReadmore Well-Known Member

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    Definitely a problem when looking for life - or when "others" look for us.

    With light being max speed and the closest other galaxy being 2.5 million light years away ...

    ... anyone in any other galaxy is detecting what earth was like millions of years ago, long, long before modern man.
     
  15. WillReadmore

    WillReadmore Well-Known Member

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    It's amazing to think that there is another giant planet in our system and we haven't even been able to find it yet!
     
  16. OldManOnFire

    OldManOnFire Well-Known Member

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    Our current technology is quite limited in regards to discovering, identifying, and understanding 'stuff' which might be millions/billions of light years away. It's no surprise to me we believe other planets might exist in our solar system because they are dark and far away...
     
  17. OldManOnFire

    OldManOnFire Well-Known Member

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    Search for ET's is not as simple as locating a signal because the differences in time which you mention are so vast that we can't even carry on a conversation. In your example above we would say 'hello' and 2.5 million Earth years later the ET's would respond by also saying 'hello' and 2.5 million Earth years later, 5 million years total, all we will have accomplished is hello and hello. The distances are staggering!

    Earthlings have only been considered intelligent beings for maybe 150 years, assuming we exclude the presidential debates, and no one knows how long intelligent civilizations can exist...at the rate we're going maybe 500 years. During a 5 million year period, Earthlings can come and go many times so ET's must be lucky to contact each other when they both are capable of doing so...IMO this greatly increases the odds of stumbling upon ET's...

    - - - Updated - - -


    And our government categorically states that we have no need to worry about extraterrestrial objects striking Earth or causing other issues in our Solar system...
     
  18. WillReadmore

    WillReadmore Well-Known Member

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    Finding another life form in this universe would be gigantic. It would be revolutionary. It's hard to imagine the ripple effects. And, that would be the case even if the life we found approximated a fungus, let alone something that could use light to communicate.


    Your second paragraph is totally false. We absolutely ARE at risk of collisions with objects large enough to be catastrophic. And, we DO care about that and have organizations that work on spotting these risks and planning what to do about them - tricks a tiny little bit like the Bruce Willis movie.


    There are other risks from outside that would simply fry earth, but are events that we could do nothing about - so it's not worth worrying about. For example, a super nova can emit gamma ray bursts in opposite directions from its poles. That could simply fry us, since in a few seconds they can emit the amount of energy that our sun will emit in its entire 10 billion year lifetime. These happen about once a day in our visible universe, but one would have to happen in our galaxy and would have to have its pole aimed at us. There are also super fast moving stars and even black holes that could come come and get us - unlikely, of course, but there would be no defense. A fast black hole might be extremely hard to detect.

    Plus, there are magnatars - super dense collapsed stars that emit gigantic amounts of radiation in all directions. We've found a lot of them. And, we've been hit by ones that are 50,000 light years away. In 2005 a magnatar damaged our satellites. We know of magnatars that are more like 9,000 light years away.

    We don't detect the radiation from these until they've past. We look at the damage and figure out we must have been hit!

    We could be fried tomorrow without us even knowing what did it. But, it's really unlikely and since we can't do anything about it, why worry?
     
  19. waltky

    waltky Well-Known Member

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    Mebbe dat was a spark from the Big Bang?
    :confusion:
    Radio flash tracked to faraway galaxy
    Wed, 24 Feb 2016 - Astronomers pinpoint the source of an explosive 'fast radio burst' for the very first time, and use it to measure the density of the cosmos.
     
  20. waltky

    waltky Well-Known Member

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    5000 year old stone circles to track the stars...
    :confusion:
    People Were Tracking Celestial Events 5,000 Years Ago, Stone Circles Reveal
    August 18, 2016 - Ancient "stone circles" in Scotland were constructed in line with the sun's and moon's movements some 5,000 years ago, new research reveals.
    See also:

    5 Strange Theories About Stonehenge
    March 12, 2013 - Thousands of years ago, an ancient civilization raised a circle of huge, roughly rectangular stones in a field in what is now Wiltshire, England. Stonehenge, as it would come to be called, has been a mystery ever since.
     
  21. waltky

    waltky Well-Known Member

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    Granny says, "Dat's right - Bible says it gonna be daylight at night in Zech. 14...
    :grandma:
    Star Explosion Could Change Night Sky
    January 09, 2017 - There could be some dramatic changes to the night sky if astronomers are correct in their observations.
     
  22. Durandal

    Durandal Well-Known Member Donor

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    I doubt that.
     
  23. Durandal

    Durandal Well-Known Member Donor

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    I thought this was old news by now. These ancient stone structures are definitely associated with the positions of certain celestial bodies at different times of the year and may well have served as calendars, which were essential to agriculture. We couldn't reliably track growing and harvesting seasons without some form of calendar, and the sky provided that before modern technology came along.
     
  24. waltky

    waltky Well-Known Member

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    Blue Moon O'er Kentucky...
    [​IMG]
    January Features Two Supermoons, Blue Moon and Total Lunar Eclipse
    December 31, 2017 - Nature lovers will have their fill of celestial treats in January with two supermoons, a blue moon and a total lunar eclipse gracing the night sky.
     
  25. waltky

    waltky Well-Known Member

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    'Serious gap' in cosmic expansion rate calls for new physics...
    [​IMG]
    'Serious gap' in cosmic expansion rate hints at new physics
    11 Jan.`18 - A mathematical discrepancy in the expansion rate of the Universe is now "pretty serious", and could point the way to a major discovery in physics, says a Nobel laureate.
     

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