Special postmark will mark Perseverance on Mars, if rover survives landing

The U.S. Postal Service plans to mark NASA’s next landing on Mars later this week, if indeed the agency’s Perseverance rover makes it safely down to the surface of the Red Planet. A special pictorial postmark has been designed to commemorate the touch down of the fifth U.S. wheeled robotic explorer on Mars. Perseverance is … Read more