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Thread: Ep. 503: Gravity Mapping

  1. #1
    Join Date
    Jul 2003
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    Ep. 503: Gravity Mapping

    The Earth looks like a perfect sphere, but down here on the surface we see that there are mountains, rivers, oceans, glaciers, all kinds of features with different densities and shapes. Scientists can map this produce a highly detailed gravity map of our planet. And it turns out, this is very useful for other worlds too.

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  2. #2
    Join Date
    May 2005
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    At 23:30 (no transcript yet) Fraser says that the day length on earth is slowing down everyday (sic). The earth rotation speeds up some days, for long periods.

  3. #3
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    May 2008
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    It is sort of like a stock of a successful company in a stock market. There will be ups and downs, but there is an overall upward trend.

  4. #4
    Join Date
    May 2005
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    Quote Originally Posted by Empyre View Post
    It is sort of like a stock of a successful company in a stock market. There will be ups and downs, but there is an overall upward trend.
    Just not every day, or every month, or every year. Or even years.

    The overall trend over years time can be downward, and has been recently.

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