25000 km is definitely space, 25,000 m is about right for a balloon.
Brit amateur payload set to complete full circle around PLANET EARTH
It's a tip of the hat today to Brit High Altitude Ballooning (HAB) bod Leo Bodnar, whose B-64 payload is poised to complete an epic 25,000km circumnavigation of the globe. B-64 - comprising a 12g solar-powered radio tracker rig - lifted off on 12 July from near Silverstone, Northamptonshire. Its most recent position showed it …