Need some space? You can now buy 7 billion-year-old stardust and pieces of the moon and Mars By Sophie Lewis Meteorites up for auction this week If you're looking for an out-of-this-world gift this Valentine's Day, an auction house is offering up rare meteorite chunks from the moon, Mars and beyond — for as little as $250. In an online sale beginning Tuesday, February 9, Christie's auction house is auctioning off 72 meteorites — solid pieces of debris from celestial objects like comets and asteroids that arrive on Earth as shooting stars, somehow managing to survive their journey through our atmosphere to land on the surface.