In the summer of 1612, Galileo Galilei turned his telescope to our closest star, the Sun, projecting its image safely onto a screen. To his surprise, he found its surface was blotted by small dark ...

For those with a passion for rare books, delving into an original work of Galileo has always offered unparalleled insight. There is no more immediate way to bring his inquisitive spirit to life than ...

On every clear Southern California morning, Steve Padilla steps outside his home at Mount Wilson Observatory in the San Gabriel Mountains, overlooking Los Angeles and the Pacific Ocean from an ...

From a home observatory in a London house on July 26, 1609, an epic journey began both for exploration, and for the lives of two pioneers: one famous, one not so much. The first known drawing of the ...

Leonardo da Vinci's centuries-old sketches reveal he may have understood key aspects of gravity long before Galileo, Newton and Einstein. A recent study from the California Institute of Technology ...

Along with countering the geocentric system, Galileo demonstrated that our Moon was not a perfect sphere, as this had also been a long-standing belief. He was the first to deduce the Moon had craters, ...

A team of engineers studying the 500-year-old, backward writings of Leonardo da Vinci have found evidence that the Italian polymath was working out gravity a century before its foundations were ...

Using modern techniques, researchers have re-examined Johannes Kepler's half-forgotten sunspot drawings and revealed previously hidden information about the solar cycles before the grand solar minimum ...