February 11, 2019 - College Dropout Moves the World
College Dropout Moves the World Born 455 years ago this week, Galileo Galilei studied medicine at the University of Pisa, but his real interest was mathematics. Bored by his other classes, he was frequently absent and ultimately left the university without a degree. A brilliant mathematician and theorist, Galileo became the first person to systematically observe the sky with a telescope, and in 1610 he discovered four moons orbiting Jupiter, a fact that shattered the theory of the Earth-centered universe and relegated Earth to its proper, albeit humbler, position as one of many planets that orbit the Sun. In this “family portrait” taken by Galileo’s namesake spacecraft, those four “Galilean” satellites are shown to scale with each other and with Jupiter. From top: Io, Europa, Ganymede and Callisto.
Image credit: NASA / JPL-Caltech
Weekly Calendar
February 11 - 17, 2019
Holidays - Sky Events - Space History
Monday 11
1970: First Japanese satellite launched
1984: STS-41B Challenger makes first shuttle landing at KSC
1997: STS-82 Discovery launched
2000: STS-99 Endeavour launched
2010: Solar Dynamics Observatory launched
Tuesday 12
First Qtr Moon 5:26 PM ET
1963: NASA selects contractor to build the Crawler Transporter
1974: Mars 5 enters orbit around Mars
2001: NEAR-Shoemaker lands on asteroid Eros
Wednesday 13
Mars 1.1° north of Uranus
1852: Johan Dreyer born
1937: Sigmund Jähn born, first German to fly in space
Thursday 14
Valentine’s Day
1972: Luna 20 launched
1980: Solar Max launched
1990: Voyager 1 takes solar system "family portrait"
2000: NEAR-Shoemaker orbits asteroid Eros
Friday 15
1564: Galileo Galilei born
1973: Pioneer 10 becomes first spacecraft to pass through the asteroid belt
2013: Meteor explodes over Chelyabinsk, Russia injuring 1,500 people
Saturday 16
1948: Gerard Kuiper discovers Miranda, moon of Uranus
1965: Saturn SA-9 launched
Sunday 17
1959: Vanguard 2 launched
1965: Ranger 8 launched
1996: NEAR-Shoemaker spacecraft launched
2007: THEMIS spacecraft launched
2009: Dawn spacecraft flies by Mars