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

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

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.

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 ...

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 ...

On a cold January day in 1642, Galileo Galilei took his last breath ... but pockmarked with craters. Jupiter had its own moons, four of them (now called the Galilean Moons), revolving around ...

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?

Jupiter and its four planet-size moons, called the Galilean satellites, were photographed by Voyager 1 and assembled into this collage. They are not to scale but are in their relative positions.

(Two suspects were killed two days later.) Also on this date: In 1610, astronomer Galileo Galilei observed four of Jupiter’s moons for the first time. In 1955, singer Marian Anderson became the ...

Since then, Jesus has not wept again despite humanity’s continuing misbehaviour since He left. Jesus has not wept since ...

TEMPLE, Texas — Italian astronomer Galileo Galilei advanced the field of astronomy on Jan. 7, 1610 - 415 years ago from Tuesday - by discovering the existence of Jupiter's moons. His discovery ...