"Almost total" moon eclipse next night, the longest since 1440
North America and a large part of South America will be able to admire a "almost total" moon eclipse in the night from Thursday to Friday, the longest of its kind since 1440.
The eclipse, at the height of which 99.1% of the visible surface of the moon will be masked (Friday at 9:03 a.m. GMT), will also be visible from part of Northeast Asia, Polynesia and the Eastof Australia, but not from Europe or Africa, indicates NASA on its website dedicated to the moon.
A moon eclipse occurs when the sun, the earth and the moon are aligned.Our natural satellite is then found in the shadow of the earth, which masks it to our sight.If the alignment is not perfect, the eclipse is not total.
The eclipse of November 19 may be only partial, it will last a total of 3 hours, 28 minutes and 23 seconds, the longest since that of February 18, 1440, which had lasted 23 more seconds.
The eclipse will start at 07:19 GMT when the moon enters the shadow of the earth.For terrestrial observers, the lunar disc will give the impression of being slowly nibbled.
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At 8:45 a.m. GMT, more than 95% of the lunar disc will be in the shadow and the moon will take a reddish shade because the earth's atmosphere deviates the red rays of solar light in the interior of its shadow of its shadow.
This phenomenon will be the most visible during the peak of the eclipse at 9:03 am GMT.
At 10:47 am GMT, the moon will be visible again in its entirety.
According to NASA, it will be necessary to wait until February 8, 2669 to attend a partial eclipse of a higher duration (3 hours 30 minutes) to that of Friday but a total eclipse is planned in less than a year, November 8, 2022,And will last 3 hours 40 minutes in total.
The show will be able to see with the naked eye without any danger, unlike the eclipses of the sun.Twins, glasses and telescopes will allow you to benefit even more, provided that the sky is sufficiently clear.