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WASHINGTON: During the Apollo 17 mission in 1972 – the last time people walked on the moon – US astronauts Harrison Schmitt and Eugene Cernan collected about 243 pounds (110.4 kg) of soil and rock samples that were returned to Earth for further study. A half century later, crystals of the mineral zircon inside a coarse-grained igneous rock fragment collected …
Read More »Moon is 4.45bn years old, scientists conclude
October 24, 2023