The solar crescents continue to grow wider as the moon slowly moves away

This heralds the moment when the diamond ring is finally extinguished and the sun is fully obscured by the moon. Total eclipse begins. Simultaneously, the dark lunar shadow that has been growing in the west rushes in and engulfs everything. You are now standing in the shadow cast by themoon a quarter of a million miles away. The moon's inky disk set against the sun's pearly white corona appears like an eerie black hole in the sky.During the brief period of totality, the full extent of the sun's corona is displayed in all its glory. Take note of the solar prominences and the overall shape and size of the corona, which vary from eclipse to eclipse. Try to discern fine details in the corona's structure — such as long wispy streamers as well as delicate brushes, loops and arcs — which are delineated by the sun's powerful magnetic field.
The daytime darkness during totality doesn't really get as black as at night. It resembles more of a deep twilight. While the sky surrounding the eclipsed sun is dark, all along the horizon the sky remains bright, bathed in a vivid yellowish orange glow. It's like being surrounded by a 360-degree sunset.The brightest planets and stars typically come out in the minutes leading to totality and remain visible throughout the total eclipse. On Nov. 14, Venus should be fairly easy to spot west of the eclipsed sun. Mercury to the east and Saturn in between Venus and the eclipsed sun might be more challenging.Keen-eyed observers can also try to glimpse the stars Arcturus to the north and Alpha Centauri to the south.
If you have a thermometer in the shade, you can measure how much the  temperature has decreased since first contact. Depending on the duration of totality and how high the sun is in the sky, the air temperature can dip by as much as 2 to 8 degrees Celsius (4 to 14 degrees Fahrenheit).You'll know that the show is almost over when the western side of the corona begins to brighten, and the chromosphere and prominences become visible again.After a few minutes of totality, as the moon begins to uncover the sun, observers will see a single bead of sunlight burst forth in slow motion from behind a deep lunar valley, forming a magnificent diamond ring. The total eclipse is over, and another round of loud cheering and applause erupts from the crowd.
Over the next hour, the various stages of the eclipse repeat themselves, this time in reverse order and on the western side of the sun. The moon's shadow races to the east as Baily's beads reappear. The corona as well as the planets and stars fade from view.Daylight returns very quickly, as if somebody had turned off the celestial dimmer switch. As the razor-thin sliver of the sun grows larger, shadow bands briefly come into view. Everything goes back to normal, including plants, animals and humans. The solar crescents continue to grow wider as the moon slowly moves away from the sun's disk.