What kind of planet?
Size gives us a starting point. Open a category to meet its worlds.
01
ARTIST’S IMPRESSION
Small worlds. Open questions.
Small worlds, roughly Earth-sized. A radius alone does not establish a rocky composition.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.
02
ARTIST’S IMPRESSION
Bigger doesn’t mean Earth-like.
Larger than Earth and smaller than Neptune. The name describes size, not Earth-like conditions.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.
03
ARTIST’S IMPRESSION
Between the familiar giants.
Intermediate-sized planets whose atmospheres and interiors can differ greatly.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.
04
ARTIST’S IMPRESSION
A world of atmosphere.
Large planets comparable in size to Jupiter, often with substantial gaseous envelopes.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.
05ARTIST’S IMPRESSION
Giant worlds, tiny years.
Giant planets on very short orbits. We use a radius of at least 6 Earth radii and a year under 10 days.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.
06ARTIST’S IMPRESSION
A year before tomorrow.
Planets that circle their stars in less than one Earth day.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.
07ARTIST’S IMPRESSION
More than one stellar companion.
Planets in systems with two or more stars. This does not itself establish that a planet orbits both stars.
Categories are browsing conventions. Size alone does not establish composition, atmosphere or habitability.