On the outside, the plain white bag seems unremarkable. But inside, it's laced with an exquisite and extremely valuable material: moon dust.
Neil Armstrong stuffed this sack with the world's first samples of lunar rocks during the Apollo 11 mission in 1969. Traces of dust still remain in the outer decontamination bag, which includes a label reading "LUNAR SAMPLE RETURN."
Sotheby's New York said the dinner plate-sized bag could fetch up to $4 million when it goes on the auction block on July 20 — the 48th anniversary of the Apollo 11's historic first moon landing.
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