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On this day: January 7

Published On: Jan 05 2013 04:29:37 AM CST   Updated On: Jan 07 2014 01:00:00 AM CST

Galileo spots some of Jupiter's moons, the Harlem Globetrotters play their first game, Truman announces the development of the H-bomb, and President Clinton's impeachment trial begins, all on this day.

OTD January 7 - Galilean moons
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NASA

1610: Galileo Galilei makes his first observation of the four Galilean moons (the four largest satellites of Jupiter: Ganymede, Callisto, Io and Europa), although he is not able distinguish the last two until the following day.

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