What percentage of the solar system's total mass is accounted for by the Sun?

• 89.45%

• 95.67%

• 75.32%

• 99.86%

Which spacecraft was the first to orbit Mercury?

• Pioneer 10

• Galileo

• Voyager 1

• Messenger

What is the hottest planet in our solar system?

• Venus

• Jupiter

• Mercury

• Mars

Which rover provided a panoramic view of Mars?

• Spirit

• Opportunity

• Perseverance

• Curiosity

How many storms are swirling at Jupiter's north pole?

• Five

• Eight

• Ten

• Twelve

What unique feature does Saturn's north pole have?

• A massive mountain

• An ice cap

• A giant crater

• A hexagonal storm

Which planet is known as the 'sideways planet'?

• Saturn

• Jupiter

• Uranus

• Neptune

Which spacecraft visited Neptune?

• New Horizons

• Voyager 2

• Cassini

• Voyager 1

What is the name of Pluto's moon?

• Charon

• Ganymede

• Europa

• Titan

What is the goal of the Breakthrough Starshot project?

• To reach Proxima Centauri

• To study the Sun

• To explore the asteroid belt

• To land on Mars