Linked from
The 74 pages that link to Exoplanet, each with the reason it gives.
Binary starCompared with: A planet orbits a star rather than forming a two-star system with it.
Planetary scienceBroader topic: Exoplanets extend planetary science to systems beyond our own.
Habitable zoneNarrower topic: Habitable-zone estimates are commonly used to assess exoplanets.
Hot JupiterNarrower topic: Hot Jupiters are exoplanets identified by their size and close orbits.
Super-EarthNarrower topic: Super-Earths are defined as a class of planets beyond the Solar System.
Kepler's third lawNarrower topic: A planet's period and its star's mass constrain its orbital scale.
Pulsar planetNarrower topic: Pulsar planets were the first confirmed members of this broader class.
Earth analogNarrower topic: Earth analogs are a subset of planets found beyond the Solar System.