Why the sky is not two suns

In fact, a binary star system is not impossible. In galaxies like the Solar System, it is still possible that the main-sequence star is a binary, but subsequent analysis will show you why no habitable planets have been found to orbit binary. There are actually many reasons, the main ones are the following:

1. The double star is relatively bright, which will cause the planet to be far away from the main sequence star, so that if the planet does not rotate fast enough, it will be very unsuitable for life to live; 2. The binary star system will cause the rotation of the planets to be disordered, because the gravitational field source will change at any time (you can draw your own diagram and calculate it with Newton's gravitational equation); 3. The binary satellite system is not stable enough and is easy to merge or separate. Hope it helps.

In fact, we are closer to the sun, and other stars similar to the sun are farther away, and there are many stars in the universe that are larger than the sun, and because they are too far away for us to look very big, they will be regarded as stars.

We have a star this week, there are two suns in some places, double stars, and there are three stars and four stars, but it is difficult to form life in that kind of place, it is recommended that the landlord go to see Liu Cixin's three-body problem, very good science fiction**, there is a three-star system in it.

Does Lou Zhu have two mommys?

This spectacle is called "parhelion", which is a phenomenon of sunlight refraction.

In layman's terms, the three suns mean that the smaller "suns" are actually reflected phantoms of the real sun. This spectacle is relatively rare, and the nuclear silence is extremely demanding because of its demanding conditions.

First, there should be a "reflector", that is, there are many hexagonal columnar ice crystals in the translucent thin clouds in the upper layer of the sky, so this phenomenon is mostly in winter.

Second, the ice crystals should be arranged neatly and vertically, similar to the physical "prism" on the spectroscopy of sunlight, and a very regular refraction phenomenon occurs to form multiple suns.

Third, the clouds should be thin and the light transmittance should be good, if the clouds are too thick, they will not be visible on the ground. Fourth, the angle between the sun, the ice crystals and the observer should be just right, if there is a slight deviation, it is difficult to detect this spectacle.

This spectacle of the "mirage" does not last too long, ranging from a few minutes to tens of minutes. It sometimes occurs between 5:30 a.m. and 6 a.m. or around 9 a.m., and sometimes in the evening.