SETI public: Fw: Earth at Aphelion; Dust Activity on Mars

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From: LARRY KLAES (ljk4_at_msn.com)
Date: Fri Jul 04 2003 - 22:12:40 PDT

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    ----- Original Message -----
    From: SpaceWeather.com
    Sent: Thursday, July 03, 2003 5:36 PM
    To: SpaceWeather.com
    Subject: Earth at Aphelion; Dust Activity on Mars

    Space Weather News for July 3, 2003
    http://spaceweather.com

    EARTH AT APHELION: Earth's orbit is not a perfect circle, it's an ellipse.
    This means our planet is not always the same distance from the sun. The
    greatest distance, which astronomers call aphelion, occurs this year on
    the Fourth of July. Curiously, the globally-averaged temperature of Earth
    is greatest when we are farthest from the sun. Follow the links on
    spaceweather.com and find out why.

    MARS DUST: The distance between Earth and Mars is shrinking fast. Although
    the two worlds won't be closest together until late August, amateur
    astronomers are already getting remarkable views of Mars through backyard
    telescopes. For instance, some advanced observers have just spotted a dust
    cloud forming near Hellas Basin--a giant impact crater on Mars' southern
    hemisphere. Two years ago a similar cloud grew into a global dust storm
    on Mars. Will this one do the same? Probably not, although astronomers
    will be watching carefully to see what happens.

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