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  • “Exploration is in our nature.” - Carl Sagan

All we have...

All we have...
All we have... “All we have are these stupid tantalizing zircons and the scars on the face of the Moon.” Plate tectonics and erosion have destroyed most of the geologic record and nearly all of the record older than 3.5 billion years ago, except for a few zircon crystals and evidence of the early solar system preserved on the Moon, planets, comets, asteroids and their meteorites. xkcd.com