If you caught the eclipse this week, you probably took care to use eclipse glasses or a pinhole camera. But you may have caught a glance at the Sun with the unaided eye. Perhaps while looking at the ...

Astronomers have been studying the sun for over 400 years, but Galileo was one of the first to document dark spots on the star. These observations challenged the general idea that the sun had the ...

Galileo's 1610 telescopic observations of Venus's phases provided evidence supporting a heliocentric model, as these phases could only occur if Venus orbited closer to the Sun than Earth. Stellar ...

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WITH all the attention on Darwin this year, one could almost overlook the 400th anniversary of one of the most significant events in the history of science: the first time Galileo peered through ...

Source: NOVA: "Galileo's Battle for the Heavens" This resource was adapted from NOVA: "Galileo's Battle for the Heavens." In 1610, when Galileo first pointed his newly built telescope toward the sky, ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...