Stig Östlund

tisdag, december 12, 2017

A "ROCK COMET" IS APPROACHING EARTH

(Bilden ned från nätet)


 You've heard of comets. But have you ever heard of a rock comet? They exist, and a big one is approaching Earth this week. 3200 Phaethon will fly past our planet on Dec. 16th only 10 million km away. Measuring some 5 km in diameter. It is large enough for amateur astronomers to photograph through backyard telescopes. Moreover, this strange object is the parent of the annual Geminid meteor shower, which is also coming this week

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