Mars, named after Czechoslovakia

3 named features. The International Astronomical Union records why each name was chosen, and those reasons are printed below exactly as they were approved.

FEATURES · 3

NAME	TYPE	SIZE	WHY THAT NAME
Morava Valles	valley	364.1 km	River in the Czech Republic.
Cusus Valles	valley	250.2 km	Classical name for modern Hron River in Czechoslovakia.
Njesko	crater	27.8 km	Town in Czechoslovakia.

Names and their origins come from the IAU Gazetteer of Planetary Nomenclature (USGS Astrogeology), retrieved 2026-08-14.
All named features ｜ KUON MARS map ｜ About the map ｜ The temperature on Mars ｜ How far away Mars is

DATA: IAU / USGS Astrogeology · NASA MGS MOLA · NASA Mars Odyssey THEMIS