Stealing the Moon

Have you ever thought about becoming an astronaut so that you can go to NASA and steal some moon rocks? It's been done already:
NASA has 842 pounds of moon rocks, Apollo's total lunar haul. A small percent, including the samples that were in Dr. Gibson's safe, have been exposed to the Earth's atmosphere. Still, they'd be invaluable to any collector.
"So when he [Thad Roberts] gets to NASA, and he sees all these Moon rocks in a safe that aren't being used, they're the most valuable thing on Earth and NASA's just putting them in a corner," said [Ben] Mezrich. "He feels that the right thing to do is to take these out of NASA, to take these Moon rocks, and use them."
So with the assistance of two younger female interns, Roberts, on a rainy Saturday night, snuck into Everett Gibson's lab. When he couldn't crack the 600-pound safe, he simply loaded it onto a dolly and wheeled it out.
Inside were samples from every lunar landing and a Martian meteorite - a total of just 101 grams, but valued by federal officials at $21 million.
The actual value of these things is nothing because who would buy them legally? They may have a significant price to collectors who wish to own them secretly, but, on the open market, they're worth nothing because they cannot be sold or owned legally.