In November .. two astronomical phenomena in the sky of the Arab region



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The Astronomical Society in Jeddah, Saudi Arabia has declared November as the “month of the Pleiades” as a cluster of stars will adorn the skies of Saudi Arabia and the Arab region after dark and through. at dawn the next day.

She added that the Thuraya Cluster, also known as the “Seven Sisters”, will be seen not only in the Arab world, but everywhere from the North Pole to the farthest point in South America.

This star cluster resembles Little Dipper’s stars except that it is hazy in appearance and it is necessary to use an optical aid (binoculars) to view this cluster from inside cities due to pollution bright.

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, compared to the Sun’s age of 4.5 billion years.

And these seven sisters are rushing into space together, and many of them are thousands of times brighter than the sun.

By taking pictures of this cluster, the effect of the nebula from which these stars were formed will appear, and through the binoculars many other stars will appear, and through a large telescope, nebular material can be seen around stars.

In general, the Pleiades star cluster is visible in the northern hemisphere all night long, coinciding with late fall and moving into winter, and it can easily be imagined as a frozen spot on the night sky dome.

The second phenomenon is related to Venus, and it can be observed in the sky of the Arab world before sunrise throughout the month of November.

During this month, Venus, the brightest planet, will be in the dome of the sky, as it is easily visible towards the eastern horizon with the naked eye in its brightest resolution.

Venus will appear to the observer with the naked eye as a bright white point of light, and when viewed through a medium telescope, he will notice that the size of its apparent disc has decreased as its luminosity increases, as it appears in phase bump, which is 81% illuminated by sunlight at present.

The planet Venus went from the evening sky to the dawn sky on June 3, 2020, in a phenomenon called internal conjunction, and this happens once every (584 days), then on July 10, 2020, it reached its peak brightness in the dawn sky in what is called (the greatest amount of lighting).

It is mentioned that in ancient times Venus was called (Hesperus) when seen in the evening sky and (Vespor) when seen in the dawn sky, and it is not known whether the ancients knew they were one celestial body.



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