NASA's Perseverance rover collected samples that will eventually return to Earth, but it's also depositing tubes around the Red Planet for safekeeping in case that return mission goes awry. Construction of the first sample depot on another planet is complete: NASA's Perseverance rover on Sunday successfully deposited the tenth and final tube in a collection of Martian geology.To ensure samples remain safe until future missions can collect them, NASA and the European Space Agency (ESA) created a... Read this story
