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The “Thuraya” star cluster adorns the sky of the Arab world, from Monday evening until dawn the next day.
The Jeddah Astronomical Society clarifies that the Thuraya group, also known as the Seven Sisters, will be seen not only in the Arab world, but everywhere from the North Pole to the most distant point in South America.
Looking at this star cluster, it resembles the Ursa Minor stars except it is hazy in appearance and can be easily located using the Orion (Gemini) stars. When an imaginary line is drawn from the three stars of Orion in the opposite direction to the star Sirius, we will reach a bright red star called Aldebaran. And near this star is the Pleiades cluster, and it is necessary to use an optical aid (binoculars) to see this cluster from inside cities due to light pollution.
The Pleiades are a cluster of open galaxies containing around 500 stars. According to recent measurements, the Pleiades arose out of the same cloud of gas and dust only about 100 million years ago, against the Sun’s age of 4.5 billion.
The stars of the Pleiades are related to each other by the exchange of gravity with each other, and are 430 light years from Earth, and these seven sisters are rushing together through space, and many between them are thousands of times brighter than the sun.
When taking pictures of this cluster, the effect of the nebula from which these stars were formed will appear, and through binoculars many more stars than the seven sisters will appear, and through a large telescope , nebular material can be seen around the stars.
As a rule, the Pleiades cluster appears above the eastern horizon before Aldebaran and is placed in front of him. The only exception to this rule will be residents of southern latitudes “south of the equator”, where the chandelier rises shortly after the Aldebaran Uprising.
For us in the northern hemisphere, the Pleiades are linked to the winter season, however, they 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 it is of an apparent movement due to the rotation of the earth around its axis.
In general, the Pleiades star cluster is visible in the northern hemisphere throughout the night, coinciding with late fall and moving into winter. The chandelier can easily be imagined as a frozen spot on the dome of the night sky.
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