Ohm
Lunar far-side impact crater; observed by Artemis II crew during lunar flyby.
Last refreshed: 5 April 2026
What did the Artemis II crew see on the lunar far side that no human had seen before?
Latest on Ohm
- What craters did the Artemis II crew see on the Moon?
- The crew saw the Orientale basin, Pierazzo, and Ohm craters with unaided human eyes during their lunar far-side passage on Day 5.Source:
- Where is Ohm crater on the Moon?
- Ohm is a ~64 km crater on the lunar far side, at approximately 18°N, 113°W, mapped in detail by the Lunar Reconnaissance Orbiter.Source: NASA LRO
Background
Ohm crater was among the lunar features observed directly by the Artemis II crew during their far-side passage on Day 5 of the mission. The crew viewed it with unaided eyes alongside Pierazzo crater and the 965-kilometre-wide Orientale basin, the first humans to see these formations directly.
Ohm is a 64-kilometre-diameter impact crater on the Moon’s far side, located at approximately 18°N, 113°W. It was catalogued by NASA’s Lunar Reconnaissance Orbiter, which has mapped the far side in detail since 2009. The crater is named after the German physicist Georg Simon Ohm.
The Artemis II flyby marks the first time any human has had a direct line of sight to the lunar far side. Previous observations were confined to robotic spacecraft and orbital photography.