The discovery of another moon around Pluto is exciting news for planetary science, but it's also likely causing some anxiety for the team in charge of New Horizons, a spacecraft set to be the first ...
After a 10-year-old wrote to NASA begging for Pluto to be re-instated as a planet, Administrator Jared Isaacman appears to be ...
Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...
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