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(MUSIC) 
JOAN CARTAN-HANSEN, HOST:

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NOT ALL SATELLITES STUDY 
THE EARTH.

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ONE OF THE MOST FAMOUS 
SATELLITES IS THE HUBBLE

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TELESCOPE.

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ITS JOB IS TO LOOK OUTWARD.

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THE HUBBLE TELESCOPE WAS 
PLACED IN ORBIT IN 1990.

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IT STARTED WITH A LITTLE 
PROBLEM WITH ITS MIRROR, BUT

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AFTER THAT WAS FIXED, THIS 
TELESCOPE HAS GONE ON TO

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PROVIDE US WITH THE MOST 
AMAZING VIEWS OF OUR SOLAR

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SYSTEM AND OF GALAXIES IN THE 
FARTHEST PARTS OF THE COSMOS.

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THE HUBBLE TELESCOPE ORBITS 
THE EARTH EVERY 95 MINUTES AND

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IS POWERED BY SOLAR PANELS.

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WITH AN ARRAY OF DIFFERENT 
INSTRUMENTS, THE HUBBLE

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TELESCOPE HAS MADE MORE THAN 
ONE POINT FOUR MILLION

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OBSERVATIONS SINCE ITS START 
IN 1990.

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HUBBLE CAN TAKE PICTURES IN 
COLORS THAT WE CAN'T EVEN SEE

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WITH OUR EYES.

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THIS PICTURE OF A STELLAR 
NURSERY IN THE EAGLE NEBULA IS

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ONE OF THE TELESCOPE'S MOST 
FAMOUS.

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THE HUBBLE TELESCOPE 
DISCOVERED TWO MOONS OF PLUTO,

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DISCOVERED THAT EVERY MAJOR 
GALAXY HAS A BLACK HOLE AT ITS

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CENTER AND CHANGED THE WAY WE 
UNDERSTAND THE UNIVERSE.

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FOR MORE INFORMATION ABOUT 
SATELLITES, CHECK OUT THE

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SCIENCE TREK WEBSITE.

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YOU'LL FIND IT AT SCIENCE TREK 
DOT ORG