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The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object. Assuming no diffraction, for a collimated beam (such as a point source) of light, only the umbra is cast. These names are most often used for the shadows cast by celestial bodies, though they are sometimes used ...
A symbolic orbital diagram from the view of the Earth at the center, with the Sun and Moon projected upon the celestial sphere, showing the Moon's two nodes where eclipses can occur. An eclipse involving the Sun, Earth, and Moon can occur only when they are nearly in a straight line, allowing one to be hidden behind another, viewed from the third.
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially. Such an alignment occurs approximately every six months, during the eclipse season in its new moon phase, when the Moon's orbital plane is closest to the plane of Earth's orbit. [1]
The Springfield Convention and Visitors Bureau is marketing the city as an "Eclipse Oasis," welcoming visitors to or from eclipse destination sites. A total eclipse in these parts: How and where ...
The Baily's beads, diamond ring or more rarely double diamond ring effects, [1] are features of total and annular solar eclipses. Although caused by the same phenomenon, they are distinct events during these types of solar eclipses. As the Moon covers the Sun during a solar eclipse, the rugged topography of the lunar limb allows beads of ...
Red and green colors work with the science of a solar eclipse, creating the Purkinje effect, and change how viewers perceive colors. In low-light conditions, red and green may be the best colors ...
In less than two months, a total solar eclipse will darken the skies and cut an arcing path across the U.S. from Texas to Maine. In most of Kentucky, excluding Paducah and the far western edge of ...
A symbolic orbital diagram from the view of the Earth at the center, showing the Moon's two nodes where eclipses can occur. Up to three eclipses may occur during an eclipse season, a one- or two-month period that happens twice a year, around the time when the Sun is near the nodes of the Moon's orbit.