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14 September, 1997
Before going to bed last night I told Nick my disappointment at not seeing
the northern lights. When we first boarded the Louis the nights were never
totally dark. The photo shows how light it was just two weeks ago at
midnight. Each day the sun set about twenty minutes earlier and for the past
few days the middle of the night has been dark enough for viewing, however,
the sky has been overcast.
At 3:30 am, I woke to the sound of Nick pounding on my door shouting the
"northern lights are visible". When I got on deck I was mesmerized for a
half-hour by a greenish white band of light dancing across the sky. Then
something struck me, the North Star was behind me, and the light show was in
the south! I went up to the bridge to continue watching the sky and chat
with the First Mate. He told me that the lights always appeared in the
southern sky in the high Arctic and the closer the ship was to the magnetic
pole, the less they were seen.
During the course of the next day I learned some interesting facts about
the amazing Northern Lights. The lights that seemed like low clouds were
actually sixty miles above the earth's surface, ten times higher than the
highest clouds. They were caused when energetic parcticles from the sun
became trapped in the earth's magnetic field and collided with atmospheric
oxygen and nitrogen, which emitted the colors. The aurora oval appears as a
curtain of colored lights, about 1000 miles in diameter, that circle both
the north and south magnetic poles.
When I was on the deck this morning, the ship's position was well inside
the aurora oval, which explains why the lights appeared to the south. The
time spent watching Aurora Borealis will be one of my more memorable
experiences.
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