Scale explorer

How big are lunar craters?

Choose a feature and compare its diameter with an Earth travel distance. The aim is to turn an abstract kilometre value into a scale you can picture.

Lunar feature

Your Earth distance

Diameter is only one dimension

Crater depth, rim height, ejecta and surrounding secondary craters add to the geological footprint. Large basins can contain mountain rings and later lava plains, so a single diameter does not capture their full structure.

Continue from this tool

Search the lunar surfaceFind major geological and observing features.Explore the interiorConnect gravity, seismology, crust, mantle and core.Trace the evidenceSee how instruments produce geological measurements.