On Oct. 18, 2019, the students of Earth to Sky Calculus launched a cosmic ray balloon to the stratosphere. This cheerful pendant went along for the ride, 109,923 feet high. After the balloon exploded (as planned) the payload parachuted back to Earth, landing in the foothills of the Grapevine Mountains in Death Valley National Park.
 
You can have it for $109.92 (its altitude divided by 1000). The students are selling these pendants to support their cosmic ray ballooning program. Each rose gold-plated pendant comes with a greeting card showing the flower in flight and telling the story of its journey to the edge of space and back again.