Solar System

Which planet is closest to the Sun?

• Venus

• Earth

• Mercury

• Mars

What planet is known for its prominent ring system?

• Pluto

• Saturn

• Earth

• Jupiter

Which is the largest planet in the Solar System?

• Moon

• Saturn

• Sun

• Jupiter

What is the main component of the Sun?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen

Which planet has the longest day (rotation period)?

• Mercury

• Venus

• Pluto

• Mars

Which two planets rotate in the opposite direction to most others (retrograde rotation)?

• Venus and Uranus

• Earth and Pluto

• Mars and Venus

• Saturn and Jupiter

What is the Kuiper Belt?

• A region of the Sun’s surface

• A ring around Saturn

• A field of asteroids between Mars and Jupiter

• A region of icy objects beyond Neptune

Which planet has the most moons? (As of 2025)

• Neptune

• Saturn

• Jupiter

• Uranus

What is the asteroid belt?

• A ring of ice around Neptune

• A cloud of comets near the Sun

• A region between Mars and Jupiter filled with rocky bodies

• A belt of solar flares

Which dwarf planet was once considered the ninth planet of the Solar System?

• Ceris

• Eris

• Pluto

• Haumea