![]() Because Earth is the third planet from the Sun, we are able to observe transits of both Mercury and Venus.A lunar eclipse happens when the Moon and Earth line up so that the Earth’s shadow falls over the Moon and darkens it. For example, when Mercury passes between the Sun and the Earth, this is called a transit of Mercury. A transit occurs when one celestial body passes between a larger celestial body and a third celestial body.There is also a phenomenon called a transit, which is similar to an eclipse, though not quite as visually stunning: The effect is so slight that a penumbral eclipse can be hard to recognize unless you know to look for it! Penumbral eclipses occur when the Moon enters only the faint outer edge of Earth’s shadow (called the penumbra), which causes the Moon to appear slightly darker than usual. A penumbral eclipse is a type of lunar eclipse.This results in a very bright ring of light called an annulus. ![]() Annular eclipses are similar to total solar eclipses (where the Sun is completely obscured by the Moon), but in an annular eclipse, the Moon’s apparent size is smaller than the Sun’s, meaning that the Sun is not completely obscured. An annular eclipse is a type of solar eclipse.A partial eclipse (of either the Moon or the Sun) occurs when only part of the Moon or Sun is obscured.During a total solar eclipse, the Sun is completely obscured by the Moon, resulting in a brief period of awe-inspiring darkness.During a total lunar eclipse, the Moon is completely obscured by the dark center of Earth’s shadow (called the umbra), giving the Moon a dark, reddish hue.A total eclipse (of either the Moon or the Sun) occurs when the Moon or Sun is entirely blocked out.There are a few different ways for lunar and solar eclipses to happen: Lunar eclipses are technically visible from the entire night side of Earth, but during a penumbral eclipse, the dimming of the Moon’s illumination is slight. A lunar eclipse occurs when the full Moon enters the shadow of Earth, which cuts off all or part of the sunlight reflected off the Moon.A solar eclipse occurs when the Moon passes directly in front of the Sun, partially or entirely blocking out its light. Solar eclipses are visible only in certain areas and require eye protection to be viewed safely.The two types of eclipses that we witness here on Earth are solar eclipses and lunar eclipses: The Moon will enter the penumbra at 3:01 A.M. This eclipse is visible from North America, although the Moon will be setting during the eclipse for observers in eastern regions. November 8, 2022: Total Eclipse of the Moon. (The partial solar eclipse is visible from Greenland, Iceland, Europe, northeastern Africa, the Middle East, western Asia, India, and western China.) This eclipse is not visible from North America. October 25, 2022: Partial Eclipse of the Sun. The Moon will enter the penumbra at 9:31 P.M. This eclipse is visible from North America, except in northwestern regions. (The partial solar eclipse is visible from the southeastern Pacific Ocean, the Antarctic Peninsula, and southern South America.) April 30, 2022: Partial Eclipse of the Sun.
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