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6:05 p.m.
Tuesday, December 29, 2020
Youssef Afifi wrote:
The sky of the Arab world is witnessing this evening, Tuesday, the “last full moon” of the year 2020, and also the last of the second decade of the 21st century (2011 to 2020), and we will see all night.
Engineer Majed Abu Zahra, president of the Jeddah Astronomical Society, said the moon will rise above the northeast horizon at sunset and simulate the apparent path of the June sun as it follows the trajectory high in the sky and will radiate past the constellation of the twins, or where the sun will be six months later, so completing The Moon in December reminds us that the long daylight hours of June will return.
Abu Zahra added on the association’s official Facebook page that he will notice that the apparent size of the moon is large during its sunrise when it is close to the horizon, and that it may be red. or orange, but after it rises in the sky, it is small. the size is coming back, and it’s just an optical illusion that occurs in the middle of each lunar month.
He explained that the pink or orange color in which the moon can appear during its ascension is due to the atmosphere of our planet, since its components scatter the white light reflected from the moon, so that the colors of the blue spectrum of short wavelengths are scattered and the colors of the long wavelength red spectrum reach our eyes, which is the same reason we see the reddish setting sun.
He continued: This is followed by the arrival of the moon at its highest point in the sky at midnight, directly above the viewer’s head, and it will set on the northwest northwest horizon. with sunrise on Wednesday.
Abu Zahra added that it can be said that the moon is full all night, but scientifically we call the moon the full moon when the moon is at an angle of 180 degrees to the sun, which will happen tomorrow. morning, Wednesday, December 30, at 6:28 a.m. KSA time, and half of its orbit will be cut off around Earth during the month.
On the other hand, the full moon will simulate the position of the June sun in the far north of the globe, in the north of the Arctic Circle the full moon will play the role of the midnight sun in June, and the reverse occurs in the southernmost latitudes where the moon remains full moon up to the horizon just like the sun in June.
This time of the month is considered ideal for viewing radioactive craters on the moon’s surface using binoculars or a small telescope, unlike the rest of the land which appears flat due to the entire moon falling in the sky. sun, these radiating craters are deposits of shiny reflective material that extend from the center of the craters outward for hundreds of kilometers, that these craters are newly formed and that the “Tycho” crater is the most radiant crater.
Over the coming nights, the moon will rise about an hour late each day, and after a few days it will only be seen in the dawn and early morning sky, and at that time it will reach the last square step one week after the full moon phase.
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