On the night of September 13, a beautiful sky with two stars accompanying the moon appeared in the night sky of Hong Kong. Do you know how this spectacle came into being? Let's have a look.
It can be seen that over the southwest, Venus (below the moon) and Jupiter (at the top left of the moon) accompany each side of the moon, forming a roughly isosceles triangle. Venus is the brightest star in the night sky, while Jupiter is the second brightest star. They form a rare astronomical landscape with the brightest object in the night sky, the moon.
Many people have filmed this shocking night scene!
What is a double moon?
The companion moon of two stars is the closest three celestial bodies to the earth - the moon, Venus and Mars meet at close range in the air.
The double star companion moon, also known as the golden wood moon, refers to a very magical astronomical phenomenon, which can be viewed by the naked eye. The double star companion moon phenomenon means that human beings on earth can observe the simultaneous appearance of the moon, Venus and Jupiter through the naked eye, mainly because Venus and Jupiter are relatively close to the earth, and because of the reason of its revolution, three planets can have The chances of coincidence are relatively close. When Venus is rotating around, it chases Jupiter eastward. When Venus catches up with Jupiter, then the moon just catches up with Jupiter. At this time, we can see the phenomenon of two stars accompanying the moon. Sometimes, there is a special astronomical phenomenon in the line of three stars. The appearance of two stars accompanying the moon can be observed in many places on the earth.
There are several factors that directly determine the appearance of the astronomical phenomenon of double stars accompanying the moon. One is that all the three planets can be observed by naked eyes on the earth, the other is that the three planets have enough brightness, and the other is that the rotation of the three planets can make them close to each other in a specific time. The existence of these factors results in the appearance of the phenomenon of double stars accompanying the moon.