Expansion of Universe
Posted: Wed Sep 14, 2011 8:13 pm
Mass is a basic property of all matters (baryonic and non-baryonic). Gravity is also an observed property of all matters. Taken together, they make all matters in the universe to attract and form structures from the atomic to the galactic levels. Between all matters, from the atomic to clusters of galaxies is a void and empty space. This space is observed expanding giving the impression specially at the galactic scale, that clusters of galaxies are "moving" away fast from "us" and and away from each other and that the rate of expansion is also increasing. Given that these galaxies, including the Milky Way, within a cluster orbit one another from their respective cluster's gravitational center. Completing a revolution takes millions of our years or hundreds of human generations. The observation data on which astronomers are extrapolating their conclusions is less than a generation. How definitive are these conclusions? Is "space" uniform across the universe? At what direction are the points of references moving relative to the cluster's orbital paths and each other? Is is not conceivable, even probable that there reference points (sources of red shifts) are in their natural orbital expansion stages hence giving the "appearance" the whole universe is expanding?