The Solar System

Which planet is the least dense?

• Mercury

• Earth

• Saturn

• Neptune

How many moons does Mars have?

• 0

• 1

• 2

• 3

To which planet does the Great Dark Spot belong to?

• Jupiter

• Saturn

• Mars

• Neptune

How long does it take Mercury to orbit the Sun?

• 55 days

• 88 days

• 100 days

• 103.25 days

Which is furthest from the Sun?

• Mars

• Neptune

• Asteroid Belt

• Kuiper Belt

Which planets have rings?

• Saturn and Jupiter

• All of the giants

• Venus and Saturn

• All of the terrestrial planets

Which planet has never been visited?

• Mercury

• Neptune

• Uranus

• All of them have been visited

Which probe is the only one to visit Uranus and Neptune?

• Voyager 1

• New Horizons

• Voyager 2

• Pioneer 10

Which of these planets is closest to the Sun?

• Earth

• Jupiter

• Mars

• Saturn

When was Neptune first visited?

• 1986

• 1989

• 2001

• 1995