Imagine you are a passenger during the explosion of a New Year’s rocket and observe the expanding particles.
During your flight you will notice that all particles move away from you and the distant particles apparently fly faster than those nearby. Edwin Hubble discovered these phenomena with remote galaxies and concluded: the universe expands at an accelerated rate.
This was erroneous. Since we are not able to discern our own escape velocity, we see all other objects moving away. The universe is not expanding at an accelerated rate.
This article solves the mystery and describes the phases of expansion from the perspective of a participating observer, and shows how many mysteries of the universe can easily be solved.