HI STARFAM! WISH GALILEO A HAPPY BIRTHDAY.

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

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

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

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

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

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

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

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

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

CRAGGLY! MEANING THE MOON HAS MOUNTAINS!

THIS IS HOW GALILEO REALIZED THE MOON HAD CHAINS

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

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