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Every guide has one star. Finish a round on a guide and its star lights up here. Five constellations, nine stars each.

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The Kite

Dwarf planets

0 of 9 stars

  1. Not yetWhat Is a Dwarf Planet? The IAU Definition Explained
  2. Not yetHow Many Dwarf Planets Are There?
  3. Not yetWhy Pluto Is a Dwarf Planet
  4. Not yetWhat New Horizons Found at Pluto
  5. Not yetCharon and Pluto's Four Small Moons
  6. Not yetCeres: The Dwarf Planet in the Asteroid Belt
  7. Not yetEris: The Dwarf Planet That Reopened the Debate
  8. Not yetHaumea: The Fast-Spinning, Egg-Shaped Dwarf Planet
  9. Not yetMakemake: A Bright, Frozen World Beyond Neptune

The Anvil

Asteroids and the asteroid belt

0 of 9 stars

  1. Not yetWhat Are Asteroids? Types, Sizes and Where They Live
  2. Not yetThe Asteroid Belt Is Mostly Empty Space
  3. Not yetVesta: The Giant Asteroid Visited by Dawn
  4. Not yetNear-Earth Asteroids: What They Are and How They Are Tracked
  5. Not yetPlanetary Defense Explained: DART and What Comes Next
  6. Not yetOSIRIS-REx and Bennu: Bringing Asteroid Dust Home
  7. Not yetHayabusa and Hayabusa2: JAXA's Asteroid Sample Missions
  8. Not yetLucy and the Trojan Asteroids of Jupiter
  9. Not yetAsteroid Apophis and Its 2029 Close Flyby

The Lantern

Comets

0 of 9 stars

  1. Not yetWhat Is a Comet? Anatomy of a Dirty Snowball
  2. Not yetComet Tails Explained: Ion Tail, Dust Tail and Anti-Tail
  3. Not yetComet vs. Asteroid: How to Tell Them Apart
  4. Not yetThe Kuiper Belt: Home of Pluto and Short-Period Comets
  5. Not yetThe Oort Cloud: The Solar System's Distant Comet Reservoir
  6. Not yetHalley's Comet: Facts, History and the Next Return
  7. Not yetGreat Comets in History: Hale-Bopp, Hyakutake and NEOWISE
  8. Not yetHow to See a Comet With Your Eyes or Binoculars
  9. Not yetRosetta and Comet 67P: The First Comet Landing

The Fan

Meteors, meteorites and impacts

0 of 9 stars

  1. Not yetMeteor, Meteoroid or Meteorite? The Difference Explained
  2. Not yetHow Meteor Showers Work: Comet Debris, Radiants and Dates
  3. Not yetHow to Watch a Meteor Shower: Dates, Gear and Tips
  4. Not yetTypes of Meteorites: Stony, Iron and Stony-Iron
  5. Not yetFireballs and Bolides: Why Some Meteors Are So Bright
  6. Not yetIs It a Meteorite? How to Check a Suspicious Rock
  7. Not yetImpact Craters on Earth: Meteor Crater to Chicxulub
  8. Not yetThe Tunguska Event of 1908: What Exploded Over Siberia
  9. Not yetThe Chelyabinsk Meteor of 2013: Airburst Over Russia

The Sextant

Exploration and how we know

0 of 9 stars

  1. Not yetHow Minor Planets Are Discovered, From Blink Plates to Sky Surveys
  2. Not yetHow Asteroids and Comets Get Their Names and Designations
  3. Not yetHow to Read an Orbit: Eccentricity, Inclination and More
  4. Not yetHow to Use the JPL Small-Body Database and Horizons
  5. Not yetMissions to Asteroids, Comets and Dwarf Planets: A Timeline
  6. Not yetThe Telescopes That Find and Study Small Bodies
  7. Not yetCitizen Science for Asteroids and Comets: How to Take Part
  8. Not yetStellar Occultations: Measuring Worlds by Their Shadows
  9. Not yetHow Do We Know What Asteroids Are Made Of?

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