Billions of galaxy exist in infinite cosmos and the series of chain process of disintegration and integration makes the cosmic infinite.
In case one is interested and stunned rare spiraling galaxy beyond Milky Way Galaxy in our extended universe.
Hubble Captures Galactic Glamour Shot! This stunning image by the Hubble Space Telescope features the spiral galaxy NGC 5643 in the constellation of Lupus (the Wolf)
Stars are fundamental building blocks of galaxies and the seeds of these stars are clouds of cosmic dust and gas. Stars are scattered all around the galaxies, and the galaxies themselves are of different types: star-forming spiral galaxies and non-star-forming lenticular and elliptical galaxies. In some spiral galaxies, the stars move in elongated orbits near the centre so that, from far, this portion appears like an illuminated bar. Nearly two-thirds of the disc galaxies in the local universe are found to have this bar structure. “Stellar bars in galaxies are clearly visible in early images taken by photographic plates, and are known to exist in galaxies from early observations of galaxies,” says Koshy George from Ludwig-Maximilians University in Munich, Germany, who has recently co-authored a paper on barred galaxies.
When two spiral galaxies collide, gravity is the main force that comes into play. As the galaxies approach each other, gravitational forces start to pull the stars, gas, and dust of the spiral arms out of their original orbits. This is what causes the warped shape of famously interacting pairs such as the Mice (NGC 4676) and the Antennae Galaxies (NGC 4038 and NGC 4039). It is also what ultimately destroys the initial spiral patterns of the two galaxies and results in an elliptical galaxy once the merger is complete.