WEBVTT

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 ELLO THERE ECLIPSE
ENTHUSIASTS   TRACE HERE~

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THIS WEEK IS AN ANNULAR SOLAR
ECLIPSE     OVER THE PACIFIC
OCEAN AND THE TIP

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OF SOUTH AMERICA. SORRY. BUT,
THIS IS AN OPPORTUNITY TO
EXPLAIN WHY ECLIPSES COME

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WITH FRIENDS! FIRST WE
NEED TO FIND THE ECLIPTIC.

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HERE’S THE SKY AT SUNSET ON
OCTOBER 5. THE BRIGHT DOT THERE
IS THE PLANET VENUS    HEY
GIRL!  NOW,

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TRACE A LINE ACROSS THE SKY TO
SATURN IN THE SOUTHEAST   THAT
IMAGINARY LINE IS THE ECLIPTIC!

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IF YOU TRACK THE MOON YOU’D NOTE
IT RUNS ALMOST PARALLEL TO THE
ECLIPTIC, BUT NOT

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QUITE   THEY ACTUALLY CROSS.
THAT POINT IS CALLED A NODE!

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WHEN THE MOON CROSSES A NODE WE
SEE AN ECLIPSE   EITHER LUNAR
ECLIPSE OR

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SOLAR ECLIPSE   DEPENDING. IT
TAKES TWO WEEKS TO MOVE FROM
NODE TO NODE. SO,

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IF WE SEE AN ECLIPSE ON ONE,
WE’LL LIKELY SEE ANOTHER IN TWO
WEEKS!

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THE NODES WOBBLE ALONG
WITH THE EARTH’S ROTATION,

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WHICH IS WHY SOMETIMES ECLIPSES
ARE TOTAL, AND SOMETIMES NOT.
KEEP LOOKIN’ UP!