Where can I see the moon constellation in Tianjin _ Where can I see the moon constellation in Tianjin?

Looking up at the starry sky, the sky is full of fighting and the mood is open. I'm just a nobody in the universe, insignificant.

On a clear moonless night in summer, the Big Dipper can be clearly seen in places with little light pollution, and the spoon shape is the most prominent.

The summer sky is inseparable from the summer triangle. The three vertices are Vega, Tianjin IV and Altair, which are the brightest stars in three different constellations. They are also much brighter than the surrounding stars and dominate the night sky in summer and early autumn.

Taking the northwest star Big Dipper as a reference, the midpoint between Vega and Tianjin IV can be reached by extending about 60 from the two Big Dippers closest to bucket handle to the opening side.

Vega of 0 is obviously brighter than Tianjin Si of 1, and the third star Altair is also the star of 1, but slightly brighter than Tianjin Si.

The summer night triangle covers a large area of the sky, and the most prominent constellation intersecting with the summer night triangle is Cygnus, forming a cross, with Tianjin IV at its top. Vega's Lyra is very small, but it is very distinctive; Altair is the brightest star in Aquila.

Vega is the brightest star in the summer triangle, 25 light years away from the earth. Vega is estimated to be 58 times brighter than the sun, and it will emit blue and white light.

The second brightest Altair is closest to the earth, about 17 light years, which is 10 times brighter than the sun. It is white and similar to the color of sunlight.

Tianjin IV, the darkest star, is as blue and white as Vega, but it is the brightest of the three stars. Tianjin IV is far from the sun-about 1, 600 light years away. It's not sure it has how bright. It is estimated that its output power is 60,000 times that of the sun, which makes it one of the brightest stars in the whole galaxy.

In summer, the brightest star in the southern sky is the antares of Scorpio, and Scorpio in summer is just above the southern horizon. Antares is obviously orange, brighter than Altair but darker than Vega.

Antares is orange because it is a rare red Supergiant star. Its average temperature is only half that of the sun, but its diameter is 500 times that of the sun.

If Antares replaces the sun, it can easily cover the earth's orbit. If it is only 25 light-years away from us like Vega, instead of 600 light-years, its brightness will reach -6, making it the brightest object in the night sky after the moon.