What percentage of the solar system's mass does the Sun comprise?

• 25%

• 75%

• 50%

• 99.8%

How long does a year on Mercury last compared to Earth days?

• 100 Earth days

• 59 Earth days

• 365 Earth days

• 88 Earth days

What is unique about Venus's rotation?

• It rotates backwards

• It has no rotation

• It rotates faster than Earth

• It rotates on its side

Which planet is known as the 'Red Planet'?

• Mars

• Saturn

• Venus

• Jupiter

What is the largest known asteroid in the asteroid belt?

• Ceres

• Pallas

• Hygiea

• Vesta

Which planet is famous for its Great Red Spot?

• Neptune

• Mars

• Saturn

• Jupiter

What are Saturn's rings primarily composed of?

• Dust

• Metal

• Gas

• Ice and rocks

Which planet rotates on its side?

• Saturn

• Neptune

• Uranus

• Jupiter

Where do short-period comets originate?

• Asteroid Belt

• Oort Cloud

• Kuiper Belt

• Mars

Which dwarf planet is known for its blue skies and red snow?

• Haumea

• Eris

• Makemake

• Pluto