What Happened
- During the Artemis II mission (launched 1 April 2026), the crew became the first humans to observe the entirety of the Orientale basin on the Moon's far side with unaided eyes.
- The Orientale basin is a multi-ring impact structure approximately 930 km in diameter, located on the boundary between the near and far sides of the Moon.
- From Earth, only a partial edge of Orientale is visible during lunar libration; the full basin structure had never been seen in direct human observation before this mission.
- The sighting occurred during the crew's approach to the Moon ahead of the 6 April 2026 lunar flyby.
- Crew member descriptions and photographs of the basin were transmitted back to Earth as part of the mission's science observation programme.
For the comprehensive account of the Artemis II mission — including crew details, mission objectives, far-side science, Artemis program context, and UPSC-relevant static topic bridges — see the primary enriched article: Artemis II: Humanity's Return to Deep Space
Key Facts & Data
- Orientale basin: ~930 km diameter; formed ~3.8 billion years ago; multi-ring impact structure.
- Location: Far side / near-far boundary of the Moon.
- Significance: First time the full basin was seen by human eyes.
- Mission: Artemis II, launched 1 April 2026, 10-day crewed lunar flyby.
- Crew: Reid Wiseman, Victor Glover, Christina Koch (NASA); Jeremy Hansen (CSA).
- Lunar flyby date: 6 April 2026.
- China's Chang'e 4 (January 2019) was the first spacecraft to land on the Moon's far side.