What Will Happen During the 2017 Total Solar Eclipse?
A total solar eclipse occurs when the earth, moon and sun are in perfect alignment – an extremely rare occurrence that many people never get to witness. For the fortunate ones, it’s a once in a lifetime experience.
As the moon moves in front of the sun, it will first appear like a small ‘bite’ taken out of an apple. Gradually, the ‘bite’ will become larger and larger as daylight becomes dimmer and dimmer. As more of the sun is covered by the moon, the sun will take on a crescent shape that continues to get thinner until the sun is completely covered and turns black. This transition will take about 1-1/2 hours.
Important: protective glasses MUST be worn to view the partial eclipse phases. Only the 1 min, 57-second total eclipse phase may be viewed safely with the naked eye.
Shortly before and after the total eclipse (at about 85 percent coverage) you should be able to see Venus 34° west-northwest of the sun.
As the crescent disappears into total black, tiny specks of light will be visible around the edge of the sun. These specks of light are called Baily's Beads and are the last rays of sunlight shining through the valleys on the edge of the moon.
Once the sun is totally eclipsed, the sun's corona will be seen shining in all directions around the moon. This is a spectacular sight since the only time the sun's corona or crown can be seen is during a total solar eclipse. It's all over by 3:00 pm.
During total darkness the temperature may drop 10 to 15 degrees, birds will stop singing, and stars will be visible in the daytime sky.
The transition back to full daylight will be the reverse of the above.
There won’t be another total eclipse in the United States until April 8, 2024. That one will begin in Mexico, enter the US at Texas, then follow a diagonal path to Maine before entering the easternmost provinces of Canada.
Safe Viewing of the Eclipse
During the few brief moments of total solar eclipse, it’s perfectly safe to view the darkened sun with your naked eyes. With the moon’s disk completely covering the sun, there are no harmful UV rays to damage your eyes. In fact, to fully experience the viewing of the corona ('crown'), viewers are encouraged to look at the sun without a filter during totality.
But the moment the first glint of a ray begins to appear, viewers must put their protective glasses or filters back on. Even the UV rays in the smallest beam of direct sunlight, while painless, can cause permanent damage to the eye. More info about eclipse-watching safety.
While a limited amount of protective eye wear may be available when you arrive in Bryson City, we recommend purchasing your protective eye wear before you leave home. Make sure the glasses are certified for solar viewing; sunglasses are not. There are many online sources, including:
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For a Different View of the Eclipse, Look Down
Looking into the sky (with protective glasses of course) is only half of the eclipse experience. You get the other half by looking down, especially if you’re near a tree.
At around three-quarters coverage, you’ll begin to notice that shadows are getting sharper. That’s because the sun’s disk is shrinking, literally approaching a point – a smaller light source that produces sharply-defined shadows. The tree’s leaves act like pinhole cameras projecting hundreds of crescent suns in their shadows.
If no trees are available at your viewing location, punch a small round hole in a sheet of poster board, and hold it high so that the sunlight shines through to the ground. As you look at the ground, you will see the crescent shape of the near-eclipse projected on the surface below. This is also a safe way to view the eclipse if you don’t have protective glasses.