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Share    |Archive    The Leonids The year’s best naturally-occurring light show, the Leonids meteor shower, is due overhead on the nights of November 15 - 20.  The passing comet “Tempel-Tuttle” leaves a debris field of meteoroid particles in its wake each year that the Earth will spin through on those nights.  Larger “Leonids,” about 10 mm across, have a mass of half a gram and are known for their brightness.  The Leonid shower may deposit 13 tons of particles across our planet.  The Leonid meteor storm of 1833 may have been the biggest, brightest ever, producing an estimated 240,000 meteoroids entering our