The largest Mars rock ever found on Earth, NWA 16788, just sold for $5.3 million at a Sotheby's auction to an unnamed bidder.

The largest piece of Mars ever discovered on Earth was sold for more than $5 million at an auction of rare geological and archaeological objects in New York. At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.