NASA astronaut Andre Douglas uses a hammer and chisel to break off a small sample during a¬¬ nighttime simulated moonwalk in the San Francisco Volcanic Field in Northern Arizona on May 16, 2024. Credit: NASA/Josh Valcarcel
NASA astronaut Andre Douglas uses a hammer and chisel to break off a small sample during a¬¬ nighttime simulated moonwalk in the San Francisco Volcanic Field in Northern Arizona on May 16, 2024. Credit: NASA/Josh Valcarcel