WEBVTT

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HI STARFAM! WISH GALILEO A HAPPY BIRTHDAY.

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457 YEARS AGO ON FEBRUARY 15, FAMOUS ITALIAN
AS-TRONOMER GALILEO GALILEI WAS BORN.

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THIS WEEK IS THE SNOW MOON;
THE FULL MOON OF FEB-RUARY,

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SO GET OUT AND WATCH THE SKIES
LIKE OUR FA-VORITE ASTRONOMER.

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GRAB SOME BINOCULARS AND HEAD
OUTSIDE TO LOOK AT THE MOON.

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IN THE 16TH CENTURY, IT WAS THOUGHT THE MOON WAS A

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PERFECT SPHERE AND WHEN THE MOON
IS FULL IT CAN LOOK PRETTY FLAT.

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BUT, IF YOU LOOK AT IT DAY AFTER
DAY YOU LL NOTICE THE DARKNESS

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MOVING ACROSS ITS FACE. IF THE MOON
WAS SMOOTH, THE SHADOW WOULD BE

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SMOOTH TOO, BUT THROUGH BINOCULARS, YOU CAN
RE-ALLY SEE THAT THE EDGE OF THAT SHADOW IS

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CRAGGLY! MEANING THE MOON HAS MOUNTAINS!

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THIS IS HOW GALILEO REALIZED THE MOON HAD CHAINS

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OF MOUNTAINS AND DEPTHS OF VALLEYS
JUST LIKE FEATURES HERE ON EARTH.

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GET OUT THERE AND GET A LITTLE
GALILEO EXCITEMENT! KEEP LOOKING UP.