Moons page — updated on December 6th, 2018

Nebulae page — updated on August 28th, 2017

Wednesday, February 15, 2012

Galileo Galilei's Birth

Galileo Galilei - Born on February 15th, 1564Galileo Galilei, an Italian astronomer and mathematician famous for improving the telescope and discovering four of Jupiter's moons, was born on this day in 1564. Galileo bravely believed that the Earth and other planets in the Solar System revolved around the Sun (heliocentrism) while many others believed the Earth was the center of the universe. This, of course, was a controversial idea back in the 1500's; the Inquisition tried and forced him under house arrest. As time went on, Galileo's belief was proven to be correct. He is also credited for being one of the first Europeans to observe sunspots. Happy birthday, Galileo!
Galileo's portrait thanks to the Galileo Galilei wikipedia page (opens in new window)

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Blog Background

The background has three Hubble Space Telescope images, which are accessible at this Hubble webpage:

— LH 95 is a star-forming region in the Large Magellanic Cloud, Dorado constellation.

— Ant Nebula (also called Menzel 3) is an aptly-named planetary nebula located in the constellation Norma.
— Egg Nebula (also called CL 2688) is a protoplanetary nebula in the constellation Cygnus.

HubbleSite Image Links: LH 95, Ant Nebula, and Egg Nebula