New Horizons Measures Size of Pluto, Settles Decades-Long Debate

NASA’s New Horizons Spacecraft has only just reached Pluto, but it has already solved a decades-long debated question about the dwarf planet: How big is Pluto? Mission scientists have found Pluto to be 1,473 miles (2,370 kilometers) in diameter, somewhat larger than many prior estimates. Images acquired with the Long Range Reconnaissance Imager (LORRI) were […]
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