Jupiter Facts | Facts about Jupiters

A day when heavenly bodies align

On July 1, 2015 Earth, Venus and Jupiter will be ordered on a single line.

Italian scientist Galileo Galilei discovered Jupiter's four largest moons in 1610 using a telescope he improved himself.

In 1610, Galileo Galilei used his improved telescope to discover four of Jupiter's moons, which supported the idea that not everything orbits Earth.

Scientists think the intense pressure inside Jupiter squeezes hydrogen into a liquid metal that can conduct electricity.

NASA's Galileo spacecraft studied Jupiter from 1995 to 2003.

Jupiter is the largest planet, and more than 1,300 Earths could fit inside it.

Jupiter's Great Red Spot is a storm bigger than Earth that has lasted for centuries, though it has been shrinking.

Jupiter has the shortest day of any planet, about 10 hours.

Jupiter's moon Ganymede is the largest moon in the solar system, and it's even bigger than Mercury.

Jupiter's moon Io is the most volcanically active place in the solar system.

Jupiter's moon Europa likely has an ocean beneath its icy surface, and NASA launched the Europa Clipper mission in 2024 to study it.

Fragments of Comet Shoemaker-Levy 9 crashed into Jupiter in 1994.

Jupiter has faint rings.

NASA's Juno spacecraft carried three LEGO figures to Jupiter.

Jupiter has the strongest magnetic field of any planet.