NASA’s Perseverance rover has dropped the last of 10 sample tubes onto the surface of Mars, thereby completing humanity’s “first sample depot on another world.” The rover began depositing titanium tubes containing samples of rock and dust six weeks ago as part of the Mars sample return mission to collect Martian material and deliver it to Earth for further study.
Perseverance landed on Mars in February 2021, touching down inside a 28-mile-wide bowl known as Jezero Crater with a core…
