USGS Reopens Comment on Its Survey of the Earth Sites That Stand In for Other Planets
Nature World News | 09.09.2026 08:47
Before a rover reaches Mars or an astronaut walks on the Moon, the mission is rehearsed on Earth, on ground chosen because it resembles the destination. Cinder fields stand in for regolith. Impact craters stand in for impact craters. Lava tubes and desert basins fill in for landscapes nobody has touched.
