On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated ...

In January 1610, astronomer Galileo Galilei spotted what he thought were four small stars tagging along with Jupiter. These pinpricks of light are actually Jupiter's four largest moons ...

Galileo Galilei – often referred to just as Galileo ... His target was the planet Jupiter – an object brighter than the surrounding stars. To his surprise, Galileo did not see just this ...

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 ...

Look for small pinpoints of light snuggled in close around Jupiter. If you're lucky, you'll spot the four Galilean moons: Ganymede, Callisto, Io and Europa. Italian astronomer Galileo Galilei ...

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

On this date, Jan. 17, 2002, the Galileo probe made it’s 33 rd pass of Jupiter’s moon, Io. After Voyager 1’s pass in 1979, Io was dubbed the most volcanically active place in the solar system.

Among them was the discovery of four moons orbiting Jupiter. To Galileo, the moons proved that not everything in space circled the Earth, and therefore our planet was not the absolute center of ...

Io has intrigued astronomers since 1610, when Galileo Galilei first discovered the Jovian ... Subsequent missions to Jupiter, with more Io flybys, discovered additional plumes—along with lava ...

This biopic is about Galileo Galilei, the seventeenth century Italian ... the world's first telescopes and discovered the moons of Jupiter. He supported Copernicus' theory that the Earth revolved ...