This Mars rock is up for auction at Sotheby's in New York City this week, which is why it's currently on display in the Upper East Side. As of now, it's expected to sell for between $2 million and $4 million, but it could very well sell for far more.

A chunk of the Martian surface that made an unlikely voyage to Earth will be available to the highest bidder at Sotheby's auction in New York.

A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million when it goes up for auction at Sotheby’s on July 16.