← The Solar System

Chapter 3

Planet records and the outer reaches

Which planet is the biggest, the hottest, the farthest, the one that spins on its side? After the records come our Moon's biggest cousins, Pluto, the icy Kuiper Belt and, far beyond, the Oort Cloud where comets are born.

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  1. Planet closest to the SunMercury
  2. Hottest planet in the Solar SystemVenus
  3. Planet known as the Red PlanetMars
  4. Largest planet in the Solar SystemJupiter
  5. Farthest planet from the SunNeptune
  6. Planet that rotates on its sideUranus
  7. Planet best known for its bright ringsSaturn
  8. Largest moon in the Solar SystemGanymede
  9. Pluto's largest moonCharon
  10. Current classification of PlutoA dwarf planet
  11. Year the IAU reclassified Pluto2006
  12. Icy region beyond Neptune that includes PlutoThe Kuiper Belt
  13. Distant shell of icy bodies, source of long-period cometsThe Oort Cloud
  14. Famous comet seen from Earth roughly every 75 yearsHalley's Comet
  15. Approximate age of the Solar SystemAbout 4.6 billion years