May be hard to see due to brightness and line of sight. Moon between 0 and 6 degrees above horizon. Moon between 6 and 12 degrees above horizon. Moon between 12 and 18 degrees above horizon. The animation shows where this total lunar eclipse is visible during the night (dark “wave” slowly moving across the Earth's surface). Business Date to Date (exclude holidays).It’s as if all the world’s sunrises and sunsets are projected onto the Moon. The more dust or clouds in Earth’s atmosphere during the eclipse, the redder the Moon will appear. The blue light from the Sun scatters away, and longer-wavelength red, orange, and yellow light passes through.ĭuring a lunar eclipse, the Moon turns red because the only sunlight reaching the Moon passes through Earth’s atmosphere. But when the Sun is setting, sunlight must pass through more atmosphere and travel farther before reaching our eyes. When the Sun is overhead, we see blue light throughout the sky. Red light, on the other hand, travels more directly through the atmosphere. Blue light has a shorter wavelength and is scattered more easily by particles in Earth’s atmosphere than red light, which has a longer wavelength. Light travels in waves, and different colors of light have different physical properties. The same phenomenon that makes our sky blue and our sunsets red causes the Moon to turn red during a lunar eclipse. Credit: NASA's Scientific Visualization Studio
The Sun is obscured by the Earth, but the glow of its corona is visible. The landscape of the Moon, foreground, is reddened by sunlight filtered through Earth's atmosphere. Here are some more skywatching tips for the month of November. The Pleiades star cluster is to the upper right, and the Hyades cluster ― including the bright star Aldebaran, eye of the bull ― is in the lower left. What else can I see tonight?ĭuring the eclipse, the Moon moves through the western part of the constellation Taurus. Second, since this eclipse is almost-total, the Moon spends a longer amount of time in the Earth’s umbra than it would in a ‘more-partial’ eclipse. Right now, the Moon is near its farthest point in its orbit around the Earth and thus, moves slowly through Earth’s shadow. Closer to the Earth, the Moon moves faster, while further away, it travels more slowly. This change in distance impacts the Moon’s orbital speed. This is a long eclipse for two main reasons: 1) The Moon’s orbital speed and 2) The near-totality of the eclipse.įirst, the Moon’s orbit around the Earth is not a perfect circle, and the Earth is off-center within the orbit so sometimes the Moon is closer to the Earth and sometimes it is farther away.
There hasn’t been a longer partial lunar eclipse since Febru(3 hours, 28 minutes, 46 seconds) and it will remain the longest partial lunar eclipse for 648 years until Febru(3 hours, 30 minutes, and 2 seconds). It’s actually the longest partial lunar eclipse in a millennium, clocking in at 3 hours, 28 minutes and 23 seconds.
Is this the longest lunar eclipse of the century? The whole Moon is in Earth’s penumbra, but again, the dimming is subtle. It appears that a bite is taken out of the opposite side of the Moon from earlier. The redness fades as less than 95% of the Moon is in the Earth’s umbra.
This is the best time to see the red color. The peak of the eclipse occurs at 9:03 UTC. Using a camera on a tripod with exposures of several seconds will bring out the color, at the expense of overexposing the lit part of the Moon. The color might be easier to see in binoculars or a telescope. More than 95% of the Moon’s disk is in the umbra and the Moon will appear red. The part of the Moon inside the umbra will appear very dark. To the naked eye, as the Moon moves into the umbra, it looks like a bite is being taken out of the lunar disk. The Moon begins to enter Earth’s umbra and the partial eclipse begins. The Moon begins to dim, but the effect is quite subtle. The Moon enters the Earth’s penumbra, the outer part of the shadow. Credit: NASA's Scientific Visualization Studio What can I expect to observe?Īll times are on Novemexcept where noted. Earlier parts of the eclipse are visible farther east, while later times are visible farther west. A world map showing where the eclipse is visible at the time of greatest eclipse.
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