IAU descriptor term
Terrae in the Solar System
Terra is the term planetary geologists use for an extensive landmass. 20 named features carry it, across 4 of the 14 mapped worlds, the largest being Aphrodite Terra on Venus at 10,000 km.
Where they are
The largest terrae anywhere
Ranked across every mapped world, by catalogued diameter.
1Aphrodite TerraVenus10,000 km2Lada TerraVenus8,615 km3Terra CimmeriaMars5,856 km4Ishtar TerraVenus5,610 km5Noachis TerraMars5,519 km6Arabia TerraMars4,852 km7Terra SabaeaMars4,688 km8Aonia TerraMars3,874 km9Terra SirenumMars3,635 km10Promethei TerraMars3,244 km11Margaritifer TerraMars2,733 km12Tyrrhena TerraMars2,470 km13Paititi TerraTitan2,100 km14Tempe TerraMars1,955 km15Xanthe TerraMars1,868 km16Yalaing TerraTitan980 km17Garotman TerraTitan970 km18Tollan TerraTitan800 km19Tsiipiya TerraTitan573 km20Vestalia TerraVesta336 km
What they are named after
Naming themes are set per world, so one descriptor can draw on very different sources depending on where it sits. Across all 20 terrae, 10 categories appear.
Greek7Latin5Slavic1Babylon1Roman1Inca1Australia1Iran1