The question of an inexplicable star

It is Venus and Jupiter, and the bright one below is Venus, which is equal, but it is in the southwestern sky (Venus is now an evening star), and Jupiter is equal in brightness, and it is the brightest binary star combination in the sky now, and the observation effect is almost the same across the country. Jupiter now sets at about 8:10 p.m.

On the evening of December 1, Venus conjunct Jupiter, and they will reach their closest distance.

First of all, I said that I was an astronomy enthusiast and made my own observations.

And then I'm going to say, if you can see it with the naked eye, and the flash is not outside the atmosphere, it's probably the refraction of spot-point light in the air, and one possibility is that there's a celestial object in the direction of your observation, but that's a little less likely according to your description.

It should not be extra-atmospheric.

It should be the refraction of fixed-point light in air.

As for appearing every day, it could be that every day there is light refracted there, and he sees with the naked eye in the sky that there is a moon as big?

I also saw it in Changde! Below this is Venus, above is Jupiter, firmly in favor of the quantum ocean! Please enter the Planetarium.

Venus below and Jupiter above. If you look at the star map, you can see that they are the best observed binary stars at the moment. The quantum ocean is absolutely right, everything else is wrong.

Believe me! I went to see Jupiter two days ago!

It is in high-altitude photography, and the flickering is caused by the change of high wind, air flow, and uneven density.

At a certain point in the development of the universe, the universe is filled with uniform clouds of neutral atomic gas, and the large gas clouds are unstable due to their own gravitational attraction and collapse. In this way, the star enters the formation phase. At the beginning of the collapse, the pressure inside the gas cloud is very small, and the matter accelerates to the center under the action of gravity.

On the one hand, the density of the gas has increased dramatically, on the other hand, due to the conversion of the lost gravitational potential energy into heat energy, the temperature of the gas has also increased greatly, and the pressure of the gas is proportional to the product of its density and temperature, so that in the process of collapse, the pressure increases faster, so that a pressure field is quickly formed inside the gas that is sufficient to compete with the gravitational force, and this pressure field finally stops the gravitational collapse. Thus a new mechanical equilibrium shape is established, which is called star badness. The mechanical equilibrium of the billet is caused by the internal pressure gradient against the gravitational force, while the existence of the pressure gradient depends on the inhomogeneity of the internal temperature (i.e., the temperature in the center of the billet is higher than the temperature in the periphery), so thermally it is an unbalanced system, and the heat will gradually flow out from the center. This natural tendency towards thermal equilibrium plays a weakening role in mechanics.

Therefore, the star billet must contract slowly, and increase the temperature with the decrease of its gravitational potential energy, so as to restore the mechanical equilibrium; At the same time, it also uses the reduction of gravitational potential energy to provide the energy required for the radiation of the star billet. This is the main physical mechanism of the evolution of the star billet. Let's discuss this process in general using classical gravitational theory.

Considering a spherical gas cloud system with density , temperature t, and radius r, the energy of the thermal motion of the gas: et= rt= t (1) Treat the gas as a monoatomic ideal gas, be the molar mass, and r be the universal constant of the gas In order to obtain the gravitational energy of the gas cloud sphere, imagine that the mass of the ball is moved to infinity little by little, and the work done to remove all the spheres is equal to -eg. When the mass of the sphere is m and the radius is r, the field force does work during the removal of dm from the surface:

dw=- =-g( )1 3m2 3dm (2) So:-eg=- (1 3m2 3dm= g( m5 3 So: eg=- (2), the total energy of the gas cloud:

e=et+eg (3) The thermal motion distributes the gas evenly and the gravitational pull concentrates the gas. Now the two work together. When e>0 is dominated by thermal motion, the gas cloud is stable, and small disturbances will not affect the balance of the gas cloud. When e<0, the gravitational force is dominant, and the small density disturbance produces a deviation from the uniformity, and the gravitational force increases at the high density, which strengthens the deviation and destroys the equilibrium, and the gas begins to collapse.

The critical radius of shrinkage is obtained from e 0: 4) The critical mass of the corresponding gas cloud is: (5) The density of the original gas cloud is small, and the critical mass is large.

So very few stars are produced alone, and most of them are a group of stars that form star clusters together. Spherical clusters can contain 105 107 stars and can be considered to have arisen simultaneously.