Jupiter Quiz

Jupiter is a gas giant, meaning it is mostly made of hydrogen and helium with no solid surface like Earth or Mars.

Ganymede is not only Jupiter’s largest moon but also the largest moon in the entire Solar System—bigger than the planet Mercury.

The Great Red Spot is a huge storm on Jupiter that’s been raging for at least 300 years and is larger than Earth.

Pioneer 10 was the first spacecraft to fly past Jupiter in 1973, sending back the first close-up images of the planet.

Jupiter is made mostly of hydrogen and helium, the two lightest and most abundant elements in the universe.

Jupiter has the shortest day of all planets, spinning once every 9.9 hours on its axis.

Europa, one of Jupiter’s moons, may have a vast ocean beneath its icy crust, making it a place scientists want to study for signs of life.

Jupiter spins so quickly that it bulges at the equator, making it an oblate spheroid.

Scientists believe Jupiter has a dense, rocky or metallic core surrounded by layers of liquid and gas.

Saturn is the second-largest planet in the Solar System and is closest in size to Jupiter.