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These Ghost-Town Galaxies Only Contain Super Old Stars, Meaning Something Mysterious Happened To Them In The Early Universe
Astronomers have investigated three ultra-faint dwarf galaxies that are located in a region of space far away from the influence […] ...
Interstellar visitors: Material from Alpha Centauri may already be here
Oumuamua and Comet Borisov in 2017 and 2019, respectively, created a surge of interest. What were they? Where did they come ...