Our Sun and its orbiting bodies. Play The Solar System trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play. Questions span every level, from easy warm-ups to expert-level stumpers, so there's a real challenge here however much you already know.
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
The planet known as the "Red Planet" due to iron oxide on its surface.
Difficulty: EasyThe phenomenon where the Moon passes between Earth and the Sun, blocking sunlight.
Difficulty: MediumThe dynamo process generating magnetic fields in the liquid metallic cores of planets.
Difficulty: HardThe star at the center of our solar system that provides Earth with light and heat.
Difficulty: EasyThe dwarf planet that was reclassified from planet status in 2006.
Difficulty: MediumThe resonance keeping Pluto and Neptune from ever colliding despite crossing orbits.
Difficulty: HardThe planet famous for its spectacular ring system visible through small telescopes.
Difficulty: EasyThe retrograde-orbiting moon of Neptune, likely a captured Kuiper Belt object.
Difficulty: Medium