Tuesday, December 20, 2016

: NATURE: SOLSTICE—DECEMBER 21



Solstice—December 21
                                                                                                                                                                                                                                         
-Our hours of daylight change each day of the year
hours of darkness, too
Seasons change every ninety days or so and vary life
for me and you

Long ago people thought the Sun circled our Earth
once every night and day
If one watches it rise each morning, and later set,
it certainly seems that way

So for most, Earth was the center of the universe
but to some astronomers of old
The facts left a lot in the sky at night unexplained
and nudged the boys to be bold

In 1543 Copernicus published a book; it turned
the world upside down
He believed our Sun was the center of things…
many thought him a clown

But over time his thesis prevailed, and space travel
has made it quite clear
Earth along with other planets do orbit a stationary Sun
once each planet’s own “year”    

Now this, our Earth, has three features that affect us
the duration of our lives:


One daily rotation ‘round our N-S axis that gives us daylight
plus the dark of night;
One trip around our Sun—as we rotate daily—that takes
365 days plus a tad more it seems;
Through four different seasons during that trip…because
Earth’s N-S axis leans

Our axis leans away from the Sun’s N-S axis six months
‘tween September and March each year
It then tilts back to the Sun’s axis to complete the journey
 home again in September and glad to be here

In the center of each six months sits a Solstice signaling
a zenith and a nadir
The zenith in sunny June marks the middle of our summer,
the nadir December 21, our winter

Those in Australia on December 21 can surf and play
throughout the longest day
For folks in America or Russia—in the Northern Hemisphere
it all works the opposite way.



Copyright © 2016 by Steven C. Brandt. All rights reserved.
N. 00130.
       

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