The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

Galileo Galilei's telescopic discovery of Jupiter's four moons in 1610 revolutionized astronomy and supported heliocentric ...

Absent any storms, planets like Venus, Jupiter, and Saturn will shine brightly in the night sky on the black moons. We’ll get a season black moon in August and the next monthly black moon ...

On Jan. 7, 1610, Italian astronomer Galileo Galilei peered through his newly improved ... By Jan. 15, Galileo correctly concluded that he had discovered four moons orbiting around Jupiter, providing ...

Stephen Hawking was born exactly 300 years after Galileo Galilei died. Their death and birth ... but pockmarked with craters. Jupiter had its own moons, four of them (now called the Galilean Moons), ...

Nearly 415 years ago to the day astronomer Galileo Galilei discovered the moons surrounding Jupiter looking through his ...

Stephen Hawking was born exactly 300 years after Galileo Galilei died. Their death and birth, exactly 300 years apart on January 8, link two scientific pioneers who turned our understanding of the ...

On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope ... Europa and Ganymede became known as the Galilean moons of Jupiter.

On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope ... Europa and Ganymede became known as the Galilean moons of Jupiter. Learn more about NASA’s current mission ...

Galileo Galilei – often referred to just as Galileo ... They are more commonly referred to as the Galilean moons of Jupiter owing to the fact that they were discovered by Galileo.

There are currently 92 moons known to orbit Jupiter. The four largest – Io, Europa, Ganymede and Callisto – were discovered by Galileo Galilei in 1610 when he pointed the first astronomical telescope ...