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HOWDY SUMMER-STARS TRACE HERE!

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IT S THE JUNE SOLSTICE, THE FIRST DAY OF 
SUMMER AND THE LONGEST DAY OF THE YEAR IN

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THE NORTHERN HEMISPHERE.

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SOLSTICE COMES FROM LATIN SOL - SUN AND SISTERE 
- TO STAND STILL.

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IT APPEARS TO HAPPEN BECAUSE THE EARTH WOBBLES 
ON OUR AXIS -- CALLED AN AXIAL TILT -- THIS

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MEANS THE NORTHERN HEMISPHERE TILTS TOWARD 
THE SUN IN JUNE, AND AWAY IN DECEMBER.

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THE AXIAL TILT IS 
WHY WE HAVE SEASONS, AND NOT, LIKE SOME THINK,

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BECAUSE OF THE DISTANCE FROM EARTH TO THE 
SUN.

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EARTH S TILT WAS THOUGHT TO BE CAUSED BY 
A GREAT IMPACT, PERHAPS BY THEIA -- WHICH

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IS THE OBJECT THAT HIT EARTH AND SPUN OFF 
TO CREATE THE MOON.

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ALL OUR PLANETS HAVE TILTS, SO EACH ONE HAS 
A SOLSTICE AND SEASONS, BUT THE FURTHER OUT

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YOU ARE, THE LONGER EACH SEASON WILL BE, BY 
EARTH RECKONING.

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HECK, NEPTUNE S LAST SUMMER SOLSTICE WAS 
IN NINETEEN THIRTEEN.

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KEEP LOOKIN UP!