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Mysterious Frozen Lake Is a Time Capsule From Millions of Years Ago
At 60 years, monument to NASA's Project Mercury still stands, but what of its time capsule?
'Time capsule' lunar samples link the moon's past and present
2.5 Billion-Year-Old “Time Capsule” Rocks Rewrite History: New Study Challenges Mantle Oxidation Theory
Scientists bury time capsule to celebrate upcoming Extremely Large Telescope (photos)
