Interactive TRAPPIST-1 Star System.

TRAPPIST System Puzzle is a short online game, to sort the exoplanet in the TRAPPIST-1 star system. Astronomy learning exercise to explore and study exoplanets that have been discovered orbiting TRAPPIST-1 star system. Fun educational game, suitable for online lessons, interactive classes and exciting homeworks.

There are 7 exoplanets top of the screen. Drag and drop them in the correct distance from the TRAPPIST-1 star. Make it for less than 7 tries for a good school mark.

These exoplanets are particularly interesting because they all orbit very close to their ultra-cool dwarf star, TRAPPIST-1, and several of them lie within the star's habitable zone, where liquid water could potentially exist on their surfaces:

• 1. TRAPPIST-1b
  Orbital Period: 1.51 days
  Distance from Star: 0.011 AU
  Mass: 1.017 Earth masses
  Radius: 1.121 Earth radii
  Type: Rocky planet
• 2. TRAPPIST-1c
  Orbital Period: 2.42 days
  Distance from Star: 0.015 AU
  Mass: 1.156 Earth masses
  Radius: 1.095 Earth radii
  Type: Rocky planet
• 3. TRAPPIST-1d
  Orbital Period: 4.05 days
  Distance from Star: 0.021 AU
  Mass: 0.388 Earth masses
  Radius: 0.784 Earth radii
  Type: Rocky planet
• 4. TRAPPIST-1e
  Orbital Period: 6.10 days
  Distance from Star: 0.028 AU
  Mass: 0.692 Earth masses
  Radius: 0.910 Earth radii
  Type: Rocky planet
• 5. TRAPPIST-1f
  Orbital Period: 9.21 days
  Distance from Star: 0.037 AU
  Mass: 0.692 Earth masses
  Radius: 1.045 Earth radii
  Type: Rocky planet
• 6. TRAPPIST-1g
  Orbital Period: 12.35 days
  Distance from Star: 0.045 AU
  Mass: 1.148 Earth masses
  Radius: 1.127 Earth radii
  Type: Rocky planet
• 7. TRAPPIST-1h
  Orbital Period: 18.77 days
  Distance from Star: 0.062 AU
  Mass: 0.331 Earth masses
  Radius: 0.777 Earth radii
  Type: Icy planet (potentially)