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

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

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

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.

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 ...

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 ...

Saturn’s iconic rings will temporarily vanish due to a natural phenomenon known as a ring-plane crossing. Ring-plane ...

This week, we're going back in history -- way back to the seventeenth century, when Galileo Galilei recorded observations about Jupiter's four moons for the first time. Why does this matter?