By the telescope, Astronomer Edwin P. Hubble first observed the distribution of galaxies in space in 1929. Hubble found that most of the galaxies outside of the local group are receding from us, and the ones farther away are receding the fastest. From Hubble’s observation, scientists discovered that the universe is expanding.
Yet, “Gravitational worlds, they are moving or changing the orbit with their all family members depending on the nuclear of each other”. Circumstantial evidence: the super cluster of galaxies, cluster of galaxies and galaxy, this there are the black hole of another kinds of energy in the deep of gravitational world, they are moving or changing the orbit with their all family members depending on the nuclear of each other. According to this information; as I see it, all the gravitation worlds of universe have become the victims of rolling or moving into the oval orbits of critical radius. The gravitational worlds of the nuclear circle of the gravitational worlds, they are expandable with other in the orbits around nucleus, resulting this it seems that the universe is expanding. See reality in our solar world about moons, planets orbits system and also see in our galaxy Milky Way stars orbits formula. From the nuclear of the circle of the gravitational force, the gravitational worlds are expanding from each other being moves around the radius of nuclear inside the circle or in the difference of movement their distance boundary are always increasing in the eternal radius. Again law of philosophy: “An individual respective very location is the present and the rest all locations are of the deep of the past”. In this way; see big bang is earliest known event. So, see scientist Edwin P. Hubble discovery is blunder about universe is expanding because expended velocity of the universe is going forward towards the critical radius.
See comments from “Shahidur Rahman Sikder” http://astrophysics.suite101.com/article.cfm/the_expansion_of_the_universe