Taurus, and behind it the twins, begin to rise higher and higher above our head starting from the end of September, and allow us to admire them on long winter evenings until April. The Pleiades (a star cluster located on the back of a calf) are visible in the sky from late August to March, finally disappearing behind the horizon in April. That is, the constellation Taurus rises immediately after the Pleiades. That's why they say that the word Aldebaran ascending behind the Pleiades.
The Pleiades is an open cluster of stars, which has more than 100 stars that influence each other by gravity. They are in the dust that was formed at their birth, these dust particles emit radiance, beating the light coming from the stars, in a quiet way the pleiades are shrouded as if in a diamond nebula. The naked eye can see from 6 to 12 stars, the number of visible stars depends on the visual acuity of the beholder.
7 stars are considered the main ones - 7 sisters of the Pleiades, and 2 stars are also allocated mythological parents of the sisters - Atlas Atlas (the one that holds the sky) and their mother Pleiona.