Pisces this week constellation

Pisces (Latin: Pisces, astronomical symbol:? ) is one of the zodiac signs, located east of Aquarius and west of Aries. It covers an area of 889 square degrees, accounting for 2. 156% of the whole day, ranking 14 among 88 constellations in the whole day.

Pisces crosses the sky on the evening of September 27th every year. The best observation time for Pisces is 165438+2 1 point every year. There are 50 stars in Pisces that are brighter than 5.5, the brightest star is Right Geng Er (Pisces η), and the apparent magnitude is 3.62.

Extended data

From the star map, these stars in Pisces are located in the south of the quadrilateral in autumn, which can be regarded as a fish (western fish), and the dark star where the quadrilateral Pegasus β meets Andromeda α is another fish (northern fish). The "V" between two fish with the vertex of alpha star is the "rope" that binds them together. ?

Looking deeper into Pisces through Hubble telescope, we will find a galaxy cluster 5 billion light years away from the Earth. The number is Cl 0024+ 1654. There are several strange blue galaxies scattered around. They have the same shape and spectrum, and the spectra of galaxies cannot be exactly the same. Astronomers have found that these blue galaxies are actually one galaxy and seem to form several galaxies. The reason is that this cluster of galaxies in the depths of Pisces stands between us and the real celestial bodies of those blue galaxies, and the gravitational field generated by the huge mass distorts the light emitted by the blue galaxies, resulting in multiple images of the galaxies behind us. This phenomenon is called gravitational lens.