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The “Pleiades” star cluster decorates the sky of the Arab world, from Monday evening until dawn the next day.
The Jeddah Astronomical Society explains that the Thuraya Cluster, also known as the Seven Sisters, will be visible not only in the Arab world, but everywhere from the North Pole to the farthest point in South America.
Looking at this star cluster, it resembles the Ursa Minor stars except that it is fuzzy in appearance and can be easily located using the stars of Orion (Gemini), when an imaginary line of three stars is plotted in Orion in In the opposite direction from Sirius we will reach a bright red star called Aldebaran. Near this star is the Thuraya cluster, and it is necessary to use an optical aid (endoscope) to see this cluster from inside cities due to light pollution.
The Pleiades are an open galaxy cluster containing around 500 stars, and according to modern measurements the Pleiades arose out of the same cloud of gas and dust around 100 million years ago, compared to the Sun’s age of 4 and a half billion years. .
The stars of the Pleiades are linked together by a gravitational exchange between them and are located 430 light years from Earth, and these seven sisters intersect in space and many of them are thousands of times brighter than the sun.
When taking pictures of this cluster, the trace of the nebula from which these stars were formed will appear, and through binoculars many more stars will appear than the seven sisters, and through a large telescope, nebulous material can be seen around the stars.
As a rule, the Thuraya cluster appears above the eastern horizon before Aldebaran and sets before it. The only exception to this rule will be for those who live in the southern latitudes “south of the equator”, where the Thuraya rises shortly after Aldebaran sunrise. .
For us in the northern hemisphere, the Pleiades cluster is associated with the winter season, although it will be observed in the evening sky by April 2021.
Currently, the chandelier appears low on the eastern horizon sometime after the onset of night and reaches high in the sky at midnight and descends westward before dawn, just like the sun during the day, and that is an apparent movement due to the rotation of the earth on its axis.
In general, the Pleiades star cluster is visible in the northern hemisphere all night long, coinciding with late fall and the transition to winter, and the Pleiades can easily be imagined as a frozen spot on the dome of the night sky.
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