20. This theory was given by Harman Boudi and
Thomas Gold. According to this theory “Galaxies
are continuous moving faraway from each other.
But their spatial density remain constant.
Because of that old galaxies move apart and new
galaxies take their position. And these new
galaxies are formed by new matter which is
being continuously created to replace of old
galaxy.

21. This theory was given by Belgian Astronomer and Priest “Abbe
Georges Lemaitre”.
1. He Said that billion of year ago, Universe or Cosmic matter
was in an extremely compressed state.
2. There expansion was started after big explosion.
3. This explosion broke up Super dense ball and Spread their
fragments far out into space, where they are still traveling
with the speed of thousand of miles per second.
4. And these moving fragments metal (dust and gases) have
formed galaxies.
5. The formation of galaxies and starts has not stopped or hold
the speed of expansion and farthest pieces are flying the
fastest.