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Powers of 10

Discussion in 'Issues Around the World' started by LissaKay, Dec 19, 2002.

  1. LissaKay

    LissaKay Oh ... Really???

    This is truly amazing and humbling -

    Molecular Expressions: Science, Optics and You - Powers of 10

    And a little ditty to hum while you watch:

    Just remember that you're standing on a planet that's evolving
    And revolving at nine hundred miles an hour,
    That's orbiting at nineteen miles a second, so it's reckoned,
    A sun that is the source of all our power.
    The sun and you and me and all the stars that we can see
    Are moving at a million miles a day
    In an outer spiral arm, at forty thousand miles an hour,
    Of the galaxy we call the 'Milky Way'.

    Our galaxy itself contains a hundred billion stars.
    It's a hundred thousand light years side to side.
    It bulges in the middle, sixteen thousand light years thick,
    But out by us, it's just three thousand light years wide.
    We're thirty thousand light years from galactic central point.
    We go 'round every two hundred million years,
    And our galaxy is only one of millions of billions
    In this amazing and expanding universe.

    The universe itself keeps on expanding and expanding
    In all of the directions it can whizz
    As fast as it can go, at the speed of light, you know,
    Twelve million miles a minute, and that's the fastest speed there is.
    So remember, when you're feeling very small and insecure,
    How amazingly unlikely is your birth,
    And pray that there's intelligent life somewhere up in space,
    'Cause there's bugger all down here on Earth.
     
  2. jamming

    jamming Banned

    Hey you ripped that from Monty Python. ;)
     
  3. rowd

    rowd Spark Maker

    I like Carl's explanation............

    <i>Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar," every "supreme leader," every saint and sinner in the history of our species lived there-on a mote of dust suspended in a sunbeam. The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Our posturings, our imagined self-importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves. The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand. It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we've ever known.</i> Carl Sagan


    <small>.....and some say, there is no God...........</small>
     
  4. rowd

    rowd Spark Maker

    It was Carl Sagan's idea to turn Voyager's camera back toward the planet that launched the spacecraft in order to reveal to that planet's inhabitants their "true circumstance and condition." After much resistance, Dr. Sagan prevailed, and on February 14, 1990, from a distance of 6.4 billion kilometers, Voyager 1 captured this image of our Earth. Here the entire world fills only 0.12 pixel and appears as a tiny crescent of light. The apparent rays of light are not sunbeams, but scattering off the camera's optics, a result of pointing it so close to the Sun. Now one of the most famous images ever taken from space, this humbling perspective of our beloved home is a part of Dr. Sagan's invaluable legacy. Image: JPL/NASA
     

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