In January, while examining ancient texts at Italy’s National Central Library of Florence, historian Ivan Malara found an ...
Lost notes reveal Galileo closely studied the ancient Greek astronomer Ptolemy, offering fresh insight into his early ...
Historian Ivan Malara has identified handwritten annotations by Galileo Galilei in the margins of a roughly 500-year-old copy ...
Galileo was a mathematician, astronomer, engineer and more. He developed the refracting telescope and with it knowledge of ...
On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated ...
Hans Lippershey's ingenious spyglass -- Galileo's new window on the heavens -- Johannes Kepler, the nearsighted wizard -- Isaac Newton's reflecting telescope -- William Herschel's giant reflectors -- ...
In 1610, Galileo Galilei became the first person to observe Saturn with a telescope. However, he was puzzled by what he saw: At first, he thought the planet had two moons, like lobes on either side of ...