A 54-pound meteorite from Mars is expected to fetch up to $4 million when it goes up for auction later this month at Sotheby's.

The more scientists study the Red Planet, the more they find unusual objects and patterns scattered across Mars' surface. As one of Earth's closest neighbors in space, Mars has long captivated humans with the prospect of alien life located just a short rocket trip away.

NASA's Perseverance rover has spotted an oddball rock in an ancient river channel on Mars. Deputy project scientist Katie Stack Morgan explains. Credit: NASA/JPL-Caltech/ASU/MSSS

Nearly two years into its mission, NASA’s Perseverance rover continues its groundbreaking exploration of Mars, pushing deeper into the planet’s geological and historical secrets. In this 21-month update,