The Environmental STEM class launched the school's seventh weather balloon on August 29. After a long journey, the payload landed in a soybean field in Nashville Township, Illinois, just a few feet from the road. Check out the process, from start to finish, on the following video.
By the Numbers
Maximum altitude: 25,663 m or 84,196 feet, or 15.9 miles
Minimum temperature reached: -53.3 C or -63.9 F
Lowest oxygen measured: 0.84% (oxygen at ground level: 21%)
Minimum pressure: 2095 Pa or 0.021 atm (normal pressure at surface is 1.0 atm)