täisvarjutusi

Täisvarjutusi refers to total eclipses. A total eclipse occurs when one celestial body completely obstructs the light from another. The most commonly observed total eclipses are solar eclipses, where the Moon passes between the Sun and Earth, casting a shadow on Earth's surface. During a total solar eclipse, the Sun appears to be entirely covered by the Moon, revealing the Sun's faint outer atmosphere, known as the corona. These events are rare in any given location due to the Moon's relatively small shadow.

Total lunar eclipses also occur when Earth passes directly between the Sun and Moon, and Earth's shadow completely covers the Moon. Unlike solar eclipses, total lunar eclipses are visible from anywhere on Earth where the Moon is above the horizon. During a total lunar eclipse, the Moon often appears reddish or coppery due to sunlight being filtered and refracted through Earth's atmosphere.

The term täisvarjutusi can also be applied to other astronomical phenomena where one object completely obscures another, though solar and lunar eclipses are the most prominent examples. The precise timing and visibility of these events are predictable and are of interest to astronomers and the public alike. Observing total eclipses requires appropriate safety precautions, especially for solar eclipses, to prevent eye damage.