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32· Cooling
Health & Science7h 28m ago
Six American flags planted on the Moon between 1969 and 1972 have likely bleached pure white after more than five decades of unfiltered solar radiation and extreme thermal cycling.
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The Moon
Who
American flags, Apollo astronauts, NASA, Lunar Reconnaissance Orbiter Camera team, University of New South Wales scientists
What
Six American flags planted on the Moon between 1969 and 1972 have likely bleached pure white after more than five decades of unfiltered solar radiation and extreme thermal cycling.
When
Fri, 19 Jun 2026 03:49:21 GMT · 7h 28m ago
Where
The Moon ·
Why
The bleaching is attributed to unfiltered solar ultraviolet light, hard solar wind, solar particle events, and temperature swings from 120°C to minus 170°C on the lunar surface.
The Frontline Impact
How this affects you
The flags, originally intended for a brief broadcast, now serve as a scientific indicator of material degradation in the harsh lunar environment, informing future lunar settlement considerations.
Story chain
1 event in this threadNo related history yet - this is the origin event.