🚀 Space Center · Builder Mission
Build Your Solar System
The Sun is lit and everything else is floating loose. Easy mode: the 8 planets. Hard mode: the belts and the cloud too — the way the solar system REALLY looks.
25 XP available
Mission 1: Assembly 🪐
Click the planets in order, starting closest to the Sun. Wrong ones bounce off!
☀️
Mission 2: The Memory Trick 🧠
Astronomers remember the order with a silly sentence — each word's first letter is a planet: "My Very Excellent Mother Just Served Us Nachos."
Mission 3: The Dwarf Planet Round 🔭
Expert territory! The IAU counts five official dwarf planets. Below are eight famous objects — click only the five dwarf planets. (Watch out: some are moons or asteroids in disguise!)
Found 0 of 5…
🏆 Your XP Progress
- ○ Assembled the solar system +12 XP
- ○ Invented a memory sentence +5 XP
- ○ Identified all 5 dwarf planets +8 XP
Total XP earned: 0 / 25