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American magazine
Mars hosts the largest known volcano in the Solar System: Olympus Mons, a shield volcano about 21–22 km high and roughly 370–700 km across, covering some 300,000 km² — far larger than any terrestrial ...
Unusual patterns in the sky often have mundane astronomical explanations: bright “new” or “super” moons, close conjunctions of planets, meteor showers (including occasional fireball years), and planet...
Heat death (also called the Big Freeze) is a mainstream, physically motivated hypothesis that the universe may asymptotically approach thermodynamic equilibrium — a state with no usable free energy an...