Edge of Space Sciences

Two 3,000g balloons were successfully launched on November 8, 2025, a breezy Saturday morning from Wiggins High School.  The first balloon 386 launched at 6:47am reaching an altitude of over 100,000ft. The second balloon burst upon filling, and a backup balloon was successfully filled with 387 being launched after 7 am reaching an altitude of over 80,000'.

On Sunday, November 2, 2025, two 3000g balloons were launched from Wiggins High School, carrying fourteen Metro State University Intro2Space payloads. Because of an excessive long prediction for Saturday, the flight was delayed until Sunday. The weather was cool but managable. The balloons flew as follows:

Monitor all four EOSS pico balloons here.

(Draft of flight summary)

EOSS-383 was launched at 7:25 a.m.on Saturday, October 17, 2025 from the Limon Softball Complex and achieved an altitude of 96,548 feet before cutdown and release of the parachute which brought the payload safely to rest at 09:48 AM in far eastern Cheyenne County near the intersection of CO State Hwy 385 and  County Road Y (38.9233333,-102.3451667).

This isn't really a Recap, because the pico balloon is still flying, as of June 8, 2026 (day 263) it has made eighteen circumnavigations of the world (see map in Charts & Data).

This will henceforth be known as the EOSS 381/382 Fog, Battery, Brakes, Fork Flights. Two 1500g balloons were launched from the Limon Soft Ball Fields on Saturday, August 2, 2025.

EOSS FLIGHT 380 a 3000g balloon was launched at 7:10am Saturdat July 26, 2025 from Genoa Campground. It carried two payloads designed and built by BAE Systems Interns. Picture perfect launch with a little dance done by the last two payload handlers.  They followed instruction perfectly. Great Job. The balloon birst at 98,184ft, and landed at 39.59657, -103.46211, or County Rd 2 and County Road P. This might be the first time the land owners phone number was on the corner post of the field! It warned about hunting without written permission and gave two numbers.

One 1500g balloon was launched on Tuesday, June 17, 2025 from VFW Post 7945, Thornton, CO and reported a maximum altitude of 96,874 ft. A successful recovery was achieved in north Adams County at 40.03883, -104.3635. A detailed summary of the flight will follow soon.

EOSS member mileage reimbursement submission here

GPSL launch scheduled for June 14, 2025 at 7:30am in Buhler KS was put on a weather hold. We sat in the hotel breakfast area watching the rain falling sidewise because of high winds and looking for tornadoes.  We heard from Zack that the rain would stop and the skies would clear for an 1:00 pm launch.  We headed to Buhler around 11:30am to set up.EOSS launched one 2000g balloon with our scheduled payloads and added two additional beacons with Horus binary.  With help from other teams our balloon was up and away.  We stayed at the launch site and helped other teams launch.

May 10, 2025

Two balloons were launched and payloads recovered successfully.

EOSS-376, a 1500g latex balloon carrying an exempt payload of CubeSats for DSST Cedar High School students was launched from the Limon Softball Fields at 6:55 a.m. It reached an altitidue of 92500 feet before burst, and its parachute carried the payloads to landing near Colorado State Highway 71 and County Road 2K in Lincoln County, about 23 miles south of Limon, CO.