Space Photos of the Week: One Last Piece of the Moon Rock

Rock of ages: Here we see astronaut Harrison H. Schmitt collecting lunar samples during the Apollo 17 mission in 1972. (Astronauts pounded a “drive tube” into the lunar ground to pull a core of material, weighing about 800 grams.) Astronauts on Apollo-era moon-landing missions brought many rock samples down to Earth; these were vacuum-sealed and …

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