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Muhammad Ismail – Cairo – Youssef Afifi wrote:
Ashraf Tadros, professor of astrophysics at the National Institute for Astronomical and Geophysical Research and former head of the department of astronomy, revealed details of 8 astronomical phenomena observed in the skies of Egypt and the world during the month of September.
Today, Wednesday, Tadros reviewed, by Masrawy, the most important of these phenomena, the first of which begins next Saturday, corresponding to September 4, with the phenomenon of the conjunction of the crescent moon with the stellar crowd (hive ) in the constellation Cancer, provided that these phenomena end on the 22nd of the same month, at the autumnal equinox, where the sun is directly perpendicular to the equator, so that the duration of night and day is equal on the globe.
September 4
The conjunction of the crescent moon with the star cluster (beehive) in the sign of Cancer, and this conjunction can be seen eastward at three in the morning until sunrise, and because it is it is difficult to see the star cluster in the hive 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 Virgo, and this conjunction can be seen towards the west immediately after sunset and until sunset from the scene around eight in the evening, for three consecutive days, i.e. 4, 5, and 6 September.
September 7
The new moon (September new moon) and the moon will not be visible in the sky all night that day, as the moon rises with the sun and sets with it at about the same time, which is the best time of month to observe faint celestial bodies such as galaxies, star clusters, asteroids, and distant stars.
September 14
Neptune in opposition to the sun, where the distant blue planet Neptune is in its best position relative to the Earth, and its entire face is lit by the sun, and it is brighter than at any other time of the year and will be visible all night that day, which is the best time to view and photograph Neptune, knowing that it is seen as a small blue dot in all but the largest telescopes.
September 14
Mercury at its greatest aspect ratio, where the planet Mercury is at its greatest eastern aspect ratio of 26.8 degrees from the sun, which is the best time to view and photograph Mercury as it will be at its highest point in the- above the western horizon in the sky immediately after sunset.
September 16-17-18
The conjunction of the moon with Saturn and Jupiter, where the three bodies appear close together for three consecutive nights to the southeast immediately after sunset and until two-thirty in the morning of the next day, except that the moon is closer from Saturn on September 16, and is closest to Jupiter on September 18.
September 21
The full moon (September full moon), and the moon appears to be a full moon to the seer and to the naked eye in the period from September 20 to 22, when the naked eye cannot distinguish the rotation of the entire lunar disk without instruments.
As for the time of the full moon, it will be September 21, when the moon’s brightness is 99.8%, and this full moon is known to American tribes as the corn moon because corn is harvested at this time of year. the year, and this moon is also known as the Harvest Moon, which means the full moon that occurs before the fall equinox.
September 22
The fall equinox and the peak of the fall equinox for that year occur on that day when the sun is directly perpendicular to the equator, so that the duration of night and day is equal over the globe.
The autumn equinox, in the northern hemisphere, corresponds to the spring equinox in the southern hemisphere, then the length of the day begins to decrease gradually, day by day, until it becomes as little as possible on December 23. , date of the winter solstice (the peak of winter), in which we notice an increase in the duration of the night compared to the duration of the day of the night, and that the trajectory of the movement of the sun in the sky tilts to the south.
Tadros pointed out that not all observations of astronomical phenomena adversely affect human health or daily activity on Earth, except for a solar eclipse, because looking at it with the naked eye is very damaging to the eye.
As for the rest of the astronomical phenomena and events, they are interesting to watch and enjoyed by amateur astronomers and those interested in astronomy and space science to track and photograph them, provided the air is clear and the sky free of clouds, dust and water vapor.
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