Ashraf Tadros, former head of the Astronomy Department, at the National Institute for Astronomical and Geophysical Research, published the most important astronomical events for September 2021.
On his Facebook page, Tadros said: Please bear in mind that all observations of astronomical phenomena and events require a clear air and that the sky is free of clouds, dust and water vapor.
Read also: The flower decorates the nights of September 2021
And Tadros continued, all the views of the events andastronomical phenomena It does not have any harm to human health or his daily activity on Earth, except for the eclipse of the sun, as looking at it with the naked eye is very harmful to the eye.
Tadros summarized the astronomical events during the month of September in a number of phenomena, namely:
September 4
The conjunction of the crescent moon with the stellar crowd (the beehive) located in the sign of Cancer, this conjunction can be seen in the east direction at three in the morning until sunrise, and because it is difficult to see the stellar crowd the beehive with the naked eye, so it is necessary to use binoculars or a small telescope.
September 5
The conjunction of Venus with the star Spica in the constellation of Virgo, this conjunction can be seen in the direction of the west immediately after sunset and until sunset at approximately eight in the evening, for a period of three consecutive days, which are 4, 5, and 6 September.
September 7 – New Moon (September New Moon)
The moon will not be visible in the sky all night on this day, as it rises and sets with the sun at about the same time, which is the best time of the month to observe faint celestial bodies such as galaxies, star clusters, constellations and distant stars.
September 14 – Neptune in opposition to the Sun
The distant blue planet Neptune will be in its best position relative to the Earth as its entire face is lit by the sun, and it will be brighter than at any other time of the year and will be visible all night on that day, which is the best time to view and photograph Neptune, knowing that it is seen as a small blue dot in all telescopes Except for the big ones.
September 14 – Mercury is at its greatest elongation
Mercury is at its greatest eastern elongation of 26.8 degrees from the sun. The best time to view and photograph Mercury is because it will be at its highest point above the western horizon in the sky just after sunset.
16 -17 -18 September
The conjunction of the Moon with Saturn and Jupiter, where the three bodies appear close together for three consecutive nights in the direction of the southeast immediately after sunset and until two thirty in the morning of the next day, except that the Moon is closer to Saturn on September 16, and is closer to Jupiter on September 18 .
September 21 – full moon (September full moon)
The moon appears to the seer and the naked eye from September 20 to 22, as the naked eye cannot distinguish the rotation of the entire moon disk without devices. As for the time of the full moon, it will be on September 21, when the luminosity of the moon reaches 99.8%, and this full moon is known to American tribes as Corn moon because corn is harvested at this time of the year.. This moon is also known as the Harvest Moon, which means the full moon that occurs before the time of the autumnal equinox.
September 22 – Autumnal Equinox
The height of the autumnal equinox for this year occurs on this day when the sun is directly perpendicular to the equator, so the length of the night and day is equal on the Earth. Note that the autumnal equinox is in the northern hemisphere, corresponding to the spring equinox in the southern hemisphere. After a day, until it becomes the lowest possible on December 23, when the winter solstice (the peak of winter), in which we notice that the length of the night is longer than the length of the day, and that the path of the sun’s movement in the sky tilts south.
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