A partial lunar eclipse is taking place early Friday, and astronomers say it will be the longest one in several centuries, lasting almost 3 ½ hours.
Skywatchers in many different regions, including North America, South America, Eastern Asia and across the Pacific Ocean, will be able to catch at least part of the celestial show.Nov. 18, 2021, 4:42 PM UTCA partial lunar eclipse is taking place early Friday, and astronomers say it will be the longest one in several centuries, lasting almost 3 ½ hours.
Lunar eclipses can be lengthy, but this event's total duration, clocked at 3 hours and 28 minutes, makes it the longest in 580 years,Lunar eclipses occur when Earth slips between the sun and the moon, creating a celestial alignment that blocks sunlight from falling onto the lunar surface. As this happens, the moon typically darkens and turns a reddish hue, an effect caused by Earth's atmosphere, which scatters light from the sun and casts it onto the face of the moon.
As it moves into Earth's shadow, it will appear to the naked eye as though a bite has been taken out of the moon,. At around 3:45 a.m. ET, the rusty-red coloring will become visible, lasting around 30 minutes and gradually fading following the eclipse peak.
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