Edge of Space Sciences

On Saturday July 11, 2026 EOSS launched pico balloon EOSSP-6 from Castlewood Canyon State Park in Douglas County, Colorado. This is a 2 meter APRS beacon that transmitts on 144.390 MHz and 144.340 MHz. This can be tracked directly on http://aprs.fi/ae0ss-9 using the beacon call sign (not the flight number like the other EOSS pico balloons). 

The balloon was launched as part of the EOSS-400 celebration picnic, honoring the many EOSS members that have accomplished 400 successful balloon flights.

The pico balloon equipment includes:

On June 20, 2026 a 1500g balloon was launched as part of the Great Plains Superlaunch mass launch from Pella, Iowa. The balloon reached an altitude of 101,342 ft, burst, and descended into power lines near West Point, Iowa. 

    EOSS members submit mileage for reimbursement here.

EOSSP-5 was launched on Monday, May 4, 2026 (Star Wars Day) from Peace with Christ Christian School in Aurora, Colorado. After an initial tangle around the launch staff, the balloon floated up over the students and off to the east. 

To monitor the balloon, follow this link: https://aprs.fi/#!call=a%2FEOSSP-5&timerange=3600&tail=3600

A perfect day for the launch of 2/1500g and 1/3000g balloons carring student payloads from both Littleton Epic and MSU.  On May 2, 2026, the parking lot at Deer Trail School was full of cars, students and parents. The predicted landing sites were near Limon, a short drive from Deer Trail.

On Sunday, April 19, 2026, we launched two 3000g latex balloons carrying a total of 17 experiments for MSU-Denver's Intro2Space program.  All payloads were recovered successfully. A detailed recap of the day's events will be posted soon.

EOSS Members: Please submit your mileage for reimbursement here: https://forms.microsoft.com/r/wKHQHifSjL?origin=lprLink

The Saturday flight was delayed one day because of high ground winds and an extended predicted flight path. On Sunday, April 12, 2026, one 1500g balloon carrying student experiments sponsored by the Rocky Mountain Chapter of the National Defense Industrial Association and one 3000g balloon carrying student payloads from CU-Boulder's Gateway to Space program were flown. Both balloons landed approximately 19 miles NNE of Anton, Colorado. The flights were as follows: