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Solar EclipsePartial Solar EclipseThe moon does not completely block the sun, and deviates from it. This is called a partial solar eclipse. Observing a solar eclipse requires special filters to dim the Sun’s blinding light, to safely watch the progress of the dark Moon across the disk of the Sun.
Annulur Solar EclipseAlthough the Sun is 400 times bigger than the Moon, it appears the same size as the Moon in our sky because it is 400 times farther away. The Moon orbits Earth in an ellipse, moving closer to and away from us. The Moon’s disk grows and shrinks slightly. If the Moon is farthest from Earth, it can’t completely cover the Sun. At mid-eclipse, a ring of light remains. This is called an “annular eclipse.” This scene is taken at Guam, USA on December 26, 2019 by Kwon O-Chul.
Total Solar EclipseIf an eclipse occurs when the Moon is closest to Earth, we see a total solar eclipse. Only when the Sun is entirely covered by the Moon — during “totality” — is it now safe to remove any solar filters or glasses, and look at the eclipse with unaided eyes. The final rays of sunlight peek through valleys on the edge of the Moon, creating the effect known as the “diamond ring.”
Surrounding the black disk of the Moon is the Sun's atmosphere, the “corona.” It is made of gas at a temperature of millions of degrees. Streamers from the corona flow away from the Sun to create a “solar wind” that blows across space. We can see the corona from Earth only during an eclipse. This scene is taken at Oregon, USA on August 21, 2017 by Oh Jun Ho, Jeong ByoungJun.
This scene is taken at Oregon, USA on August 21, 2017 by Oh Jun Ho, Jeong ByoungJun.
As the Sun shrinks to a thin crescent, it begins to appear like a bright star in the sky. The day gets darker and the sky turns to an unearthly steely blue. Something very unusual is about to happen.
This scene is taken at Wyoming, USA on August 21, 2017 by Kwon O-Chul. |
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