Sun
Our Moon
Inner Planets
Outer Planets
Jupiter's Moons
100

How big is the sun?

The Sun is 864,400 miles (1,391,000 kilometers) across.

100

What is the moon made out of?

The moon is mostly made of iron.

100

Name the inner planets and list them from smallest in size to biggest in size.

Mercury, Mars, Venus, and Earth.

100

Why are the outer planets called gas giants?

They are mostly made of hydrogen and helium gas

100

Which of Jupiter's moons is the most likely candidate to harbor life?

Europa

200

What type of star is the sun?

The Sun is a G-type main-sequence star.

200

How big is the moon?

The moon's equatorial circumference is 6,783.5 miles.

200

How many moons does the inner planet Mars have in total and what are their names?

Earth has one moon named "Moon" and Mars has  two small moons named Phobos and Deimos.

200

What are the names of the outer planets and list them from smallest to biggest in size.

Neptune, Uranus, Saturn, and Jupiter

200

What are Jupiter's moons composed of?

Rocks and ice mixed together

300

What is the sun made of?

The Sun is composed of hydrogen (around 92%) and helium (around 8%).

300

What type of star is the moon?

The moon is not considered a star.

300

What are inner planets composed of?

Metals and rocks

300

What is the relationship between outer planets and the orbit time of inner planets?

Outer planets have longer orbit periods than inner planets so they take longer to orbit around the sun
300

What are the main four moons of Jupiter?

Ganymede, Callisto, Io, and Europa

400

What would happen to Earth if the Sun didn't exist?

If the Sun didn't exist, Earth would be a permanently dark and freezing planet.

400

How far is the moon from the earth?

Moon is an average of 238,855 miles (384,400 km) away.

400

What is the relation between the inner planets and the outer planets and the inner planets orbits compared to outer planets.

Inner planets orbit from 2 times, 3 times, or any other multiple times the next outer planet orbits.

400

What gases and liquids are on the outer planets?

Hydrogen, helium, methane, ammonia, and water vapor for gases and liquid hydrogen.

400

Around how many miles are Jupiter's moons?

A few miles to 3107 miles

500

How heavy is the Sun?

The Sun weighs about 333,000 times as much as Earth.

500

How bright is the moon?

The intensity of moonlight varies greatly depending on the lunar phase.

500

Why are inner planets more round at their poles than outer planets?

Inner planets rotates slower than the outer planets

500

How many moons orbit around the outer planets? Name the main moons that orbit around each planet.

293 moons, and the names are Ganymede, Enceladus, Miranda, and Triton

500

What is the distance between Jupiter and Jupiter's moons

The range of distance between Jupiter and Jupiter's moons is 421,800 kilometers to around 24 million kilometers

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