Why NASA still can't bring Mars samples home

NASA already has some of the most valuable rock samples in human history waiting on Mars. Collected by the Perseverance rover, these samples could reveal whether ancient microbial life once existed on the Red Planet. But there is one problem: bringing them back to Earth is proving far harder than collecting them. With rising costs and technical hurdles slowing the Mars Sample Return mission, NASA faces one of the biggest challenges in modern space exploration. Video edited using footage owned by NASA Royalty free music from Hook Sounds