Lunar Eclipses
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Did you know there will be a lunar eclipse this week? Jessi and Squeaks explore what causes lunar eclipses and why they can make the moon look red! ---------- Correction: Edited by Sarah Meismer Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/SciShow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow SOURCES: http://www.nasa.gov/audience/forstudents/k-4/stories/what-is-an-eclipse-k4/#.VPTZQ1PF9sD http://eclipse.gsfc.nasa.gov/lunar.html http://www.timeanddate.com/eclipse/lunar/2015-april-4 http://www.space.com/15689-lunar-eclipses.html Images: www.thinkstock.com
Comments
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I have seen a lunar eclipse on Prince Edward Island on September 27 2015. It was the day after I moved to 144 walker Ave which is in Summerside
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i will see the lunar eclipse cause I live in Asaia
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I don't thing that there is lunar eclipes in my country
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I am in second grade my name is Nishe if you already know mom I want no Indio I just saw the the moon web and my brother said that soon it's going to be blue is that going to be too
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blood Moon
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today
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there is a lunar eclipse
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Who Knows there is an Eclipse Tomorrow
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I used to live in an apartment in Texas which is in Southern United States.She got the date right but the places wrong. I also got to see the lunar eclipse.
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me
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Look at the moon it's red right now
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can you do a video of why the sun is yellow.................................if you havent done it i have not checked.......................if you have can you do a video of..........................why can birds fly? if you do it i will SCREAM!! thank you :)
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Who is watching this in 2016 May
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yellow or blue
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red
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I saw the lunar eclipse in September in 2015
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Some time there is the blues moon
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Did you know:A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth and moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle. Hence, a lunar eclipse can occur only the night of a full moon. The type and length of an eclipse depend upon the Moon's location relative to its orbital nodes.
A total lunar eclipse has the direct sunlight completely blocked by the earth's shadow. The only light seen is refracted through the earth's shadow. This light looks red for the same reason that the sunset looks red, due to rayleigh scattering of the more blue light. Because of its reddish color, a total lunar eclipse is sometimes called a blood moon.
Unlike a solar eclipse, which can be viewed only from a certain relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of the Earth. A lunar eclipse lasts for a few hours, whereas a total solar eclipse lasts for only a few minutes at any given place, due to the smaller size of the Moon's shadow. Also unlike solar eclipses, lunar eclipses are safe to view without any eye protection or special precautions, as they are dimmer than the full moon.
The shadow of the Earth can be divided into two distinctive parts: the umbra and penumbra. Within the umbra, there is no direct solar radiation. However, as a result of the Sun's large angular size, solar illumination is only partially blocked in the outer portion of the Earth's shadow, which is given the name penumbra.
A penumbral eclipse occurs when the moon passes through the Earth's penumbra. The penumbra causes a subtle darkening of the moon's surface. A special type of penumbral eclipse is a total penumbral eclipse, during which the Moon lies exclusively within the Earth's penumbra. Total penumbral eclipses are rare, and when these occur, that portion of the moon which is closest to the umbra can appear somewhat darker than the rest of the moon.
A partial lunar eclipse occurs when only a portion of the moon enters the umbra. When the moon travels completely into the Earth's umbra, one observes a total lunar eclipse. The moon's speed through the shadow is about one kilometer per second (2,300 mph), and totality may last up to nearly 107 minutes. Nevertheless, the total time between the moon's first and last contact with the shadow is much longer, and could last up to four hours.
The relative distance of the moon from the Earth at the time of an eclipse can affect the eclipse's duration. In particular, when the moon is near its apogee, the farthest point from the Earth in its orbit, its orbital speed is the slowest. The diameter of the umbra does not decrease appreciably within the changes in the orbital distance of the moon. Thus, a totally eclipsed moon occurring near apogee will lengthen the duration of totality.
A central lunar eclipse is a total lunar eclipse during which the moon passes through the centre of the Earth's shadow. These are relatively rare.
A selenelion or selenehelion occurs when both the Sun and the eclipsed Moon can be observed at the same time. This can happen only just before sunset or just after sunrise, and both bodies will appear just above the horizon at nearly opposite points in the sky. This arrangement has led to the phenomenon being referred to as a horizontal eclipse. There are typically a number of high ridges undergoing sunrise or sunset that can see it. Although the moon is in the Earth’s umbra, the Sun and the eclipsed Moon can both be seen at the same time because the refraction of light through the Earth’s atmosphere causes each of them to appear higher in the sky than their true geometric position. -
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I see the lunar eclipse in North America yellow
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