On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

Europa was one of four moons discovered on Jan. 7, 1610, by astronomer Galileo Galilei. Speaking of Galileo, this photo was ...

But it was not always so. Until the likes of Copernicus, Kepler and Galileo came along, everyone thought the planets (that they knew about) revolved around Earth, and before even that, no one was ...

These icy Jovian moons were first discovered by Italian astronomer Galileo Galilei in 1610 ... this annual event means the planet is both shining at its brightest and is well-positioned for ...

To Galileo, the moons proved that not everything in space circled the Earth, and therefore our planet was not the absolute center of the universe, as the Church maintained the Bible had it.

Five years after its launch on Dec. 7th, 1995, Galileo arrived at Jupiter. It orbited Jupiter for eight years before NASA sent it on a crash-course into the planet's atmosphere. NASA intentionally ...

January 7, 1610, using a hand-built telescope, Galileo Galilei discovered the planet Jupiter and four moons orbiting the planet. His first observation led him to believe he was observing a group of ...

it’s usually the easiest planet to observe. Put a pair of binoculars on it and you’ll also see its four giant moons Galileo (which is bigger even than the planet Mercury) alongside Europa ...

In the 1990s, NASA's Galileo mission performed magnetic induction ... and its distance from the giant planet can vary by 2,175 miles (3,500 kilometers). This means the gravitational force that ...