![]() ![]() ![]() Why does it turn red? From the Moon, you see the solid Earth blocking the Sun. In this case the southern tip may look orange or yellowish. Many times as the Moon slips into Earth's darkest shadow it appears brownish, then near eclipse maximum it turns a deep, blood red. Everything but the very southern tip will be dark, but even that part won't be lit brightly. The eclipse maximum is at 09:02 UTC (04:02 Eastern US time) *. Over the next few minutes as the Moon goes deeper into the umbra it will look like a bite is taken out of it, growing in size. It starts to enter the umbral shadow ( U1) at 07:18 UTC, and you'll see that as the western (on the Moon's left for northern hemisphere observers) part of the Moon starting to get dark, like a line drawn across it. You won't really notice this since that part of the shadow isn't very dark. The Moon enters the penumbral shadow (this moment is called P1) at 06:02 UTC Friday morning (01:02 Eastern US time note that for Mountain and Pacific that's 23:02 and 22:02 Thursday night, respectively). Notes are in the text.Įclipse predictions by Fred Espenak, NASA's GSFC The key moments in the November 18/19 2021 lunar eclipse. But a lunar eclipse is when the Earth blocks the Sun as seen from the Moon, so it's all good to watch. It's a solar eclipse that can be dangerous to view, when the Moon blocks the Sun. I get this question a lot, so right off the bat: It's perfectly safe to observe a lunar eclipse with your naked eye, with binoculars (which I strongly recommend), or even a telescope. That should look pretty cool, so it's worth taking a look. About 97% of the Moon will be in Earth's deep shadow, so even at maximum eclipse a little tiny bit near its south pole will still be lit by the Sun. It'll actually be the longest partial lunar eclipse in the century.īut more importantly this is almost but not quite a total eclipse very very close but not exactly. For one, the Moon will be near apogee, the farthest point in its elliptical orbit around the Earth, so it will appear slightly smaller than average and also be moving more slowly, so the eclipse lasts a bit longer than usual. These are always fun, but this one is unusual in a number of ways. This one strongly favors viewers in North America, but will be visible in part from Central and South America and eastern Asia. Starting Thursday night/Friday morning, the sky will put on a show: A lunar eclipse, when the Moon passes into and out of Earth's shadow. ![]()
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