Laser Altimeter

An instrument that measures surface elevation by timing the return of laser pulses reflected from a planet’s surface. MESSENGER’s altimeter was key to mapping Mercury’s topography.

Source: nasa.gov

APODs including "Laser Altimeter"

The Spiral North Pole of Mars

06/07/2025

MESSENGER's Last Day on Mercury

01/05/2025

Exaggerated Moon

24/07/2024

The Spiral North Pole of Mars

19/12/2017