Spiral Galaxy –How it had been formed?
By Wiki: "The Milky Way began as one or several small overdensities in the mass distribution in the Universe shortly after the Big Bang. Some of these overdensities were the seeds of globular clusters in which the oldest remaining stars in what is now the Milky Way formed. These stars and clusters now comprise the stellar halo of the Galaxy. Within a few billion years of the birth of the first stars, the mass of the Milky Way was large enough so that it was spinning relatively quickly. Due to conservation of angular momentum, this led the gaseous interstellar medium to collapse from a roughly spheroidal shape to a disk. Therefore, later generations of stars formed in this spiral disk. Most younger stars, including the Sun, are observed to be in the disk."
Hence:
1. Black hole - In this explanation there is not even one word about the supper massive black hole. The Science has no clue how and when it had been created
2. Spinning – In the Milky Way there are about 400 Billion stars. Even if we put them together, it is clear that each one might have a different velocity, phase & direction. It’s a real enigma that all of this mass would suddenly start spinning in one direction and at high velocity.
3. Escape – Actually, if the stars will start spinning at higher and higher velocity, we would expect that most of them would be thrown out of the stellar halo galaxy.
4. Disk shape & spiral arms – There were no gravity force between the stars at the stellar halo. If there was some sort of gravity force, then we would expect them to collide with each other. Hence, the conservation of angular momentum couldn't set the disk shape and the spiral arms without the requested power which is needed to hold them together.
Therefore, The Idea that spiral galaxy could be created out of stellar halo and global clusters is absolutely wrong!!!
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