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In antiquity, a mariner or hunter could identify 6000 stars with his naked eye. Modern astrophysics now researches trillions of stars, galaxies and galaxy clusters. The universe is showing all the signs of an evolution. Between 70 and 90 percent of the masses that cause gravity and anti-gravity remain undiscovered. A gold rush epoch in astronomy!
In antiquity, a mariner or hunter could identify 6000 stars with his naked eye. Modern astrophysics now researches trillions of stars, galaxies and galaxy clusters. The universe is showing all the signs of an evolution. Between 70 and 90 percent of the masses that cause gravity and anti-gravity remain undiscovered. A gold rush epoch in astronomy!