WEBVTT

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HI SUPERSTARS, TRACE HERE! BACK
IN APRIL WE#
FOUND HERCULES, AND THIS WEEK
WE’RE GOING TO USE

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BINOCULARS OR A TELESCOPE TO SEE
SOMETHING INSIDE#
HERCULES KEYSTONE - THE GREAT
GLOBULAR CLUSTER!

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HIT THE DARKNESS FACING WEST
AFTER 4AM AND#
LOOK STRAIGHT UP. THE BRIGHTEST
STAR YOU SEE

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IS VEGA. NEARBY IS THE KEYSTONE
OF HERCULES! AND#
RIGHT THERE WE WILL FIND THE
HERCULES CLUSTER,

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A.K.A. MESSIER 13. A.K.A. NGC#
6205 - GOT ALL THAT? GREAT.

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GLOBULAR CLUSTERS ARE A . GLOB.
OF#
OLD STARS, GRAVITATIONALLY BOUND

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TOGETHER - AND THIS ONE IS THE
BEST IN THE#
NORTHERN SKY. M13 IS ABOUT 25
THOUSAND LIGHT

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YEARS AWAY AND CONTAINS SEVERAL
HUNDRED#
THOUSAND STARS! THE STARS AT THE
CENTER

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OF THIS CLUSTER ARE 500 TIMES
CLOSER TO EACH#
OTHER THAN WE ARE TO OUR
NEIGHBORS. MEANING,

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THE CLOSE STARS WOULD BE AS
BRIGHT#
IN THE SKY AS WE SEE PLANETS!

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ASTRONOMERS HAVE MARVELED AT M13
FOR CENTURIES#
AND NOW YOU JOIN THEM! KEEP
LOOKIN’ UP.