About Edge of Space Sciences (EOSS)

Edge of Space Sciences (EOSS) is a Denver, Colorado based non-profit organization that promotes science and education by exploring frontiers in amateur radio and high altitude balloons. Click "Read More" for more information.

Our organization works with educators, offering valuable opportunities to enhance their students' studies of science, technology, engineering and math (STEM) through real, hands-on experience. We provide FAA coordination, launch, tracking and recovery of the payloads. Each year, our volunteers spend thousands of hours to enable student STEM programs to reach the Edge of Space.

EOSS-376 and EOSS-377: DSST /Wheatridge HS - Recap

Submitted by Doug NØMM on Sat, 05/10/2025 - 22:57

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.

AIAA-RMS sponsored launch for the Denver Schools of Science and Technology (DSST) and Wheat Ridge HS

Submitted by Doug NØMM on Sat, 05/03/2025 - 16:31

The Rocky Mountain Section of the American Institute of Aeronautics and Astronautics (AIAA-RMS) is sponsoring this launch day for the Denver Schools of Science and Technology (DSST) and Wheatridge High School, which will include two balloons: a 3000g latex balloon and a 1500g latex balloon. If weather conditions demand, we will launch three 1500 g latex balloons.

EOSS-374/375 Gateway to Space - Recap

KCØRPS's picture
Submitted by KCØRPS on Sat, 04/12/2025 - 16:56

Summary:

Two 1500g balloons were launched with exempt payload strings on Saturday, May 3, 2025 from Limon Colorado. This was the third attempt to launch the Gateway to Space payloads, delayed by weather. All class payloads flew, but sadly some students could not attend the launch because of final exams. The balloons flew as follows

EOSS-372/373 Metro State University - Intro2Space & Littleton EPIC - Recap

KCØRPS's picture
Submitted by KCØRPS on Sun, 04/06/2025 - 18:35

A beautiful morning a few light clouds and a big moon.

We launched 2 balloons on April 12, 2025, 373H @ 6:45am with MSU payloads and 372L @ 7:08 am with Littleton EPIC Payloads. Both balloons headed towards Arriba/Flagler CO reaching over 90,000ft.

373 landed closer to Arriba W of hw 63 and S of 3Z.  372 landed north of Flagler at the corner of CR 6 and FF.

EOSS-370/371 Colorado Space Grant Consortium Spring Launch - Recap

KCØRPS's picture
Submitted by KCØRPS on Thu, 03/27/2025 - 09:58

Two 3000g non-exempt balloons were launched from Deer Trail Colorado on Sunday April 6, 2025 carrying student payloads for the Colorado Space Grant Consortium. The balloon flights proceeded as follows: 

EOSS-369 NDIA Flight - Recap

KCØRPS's picture
Submitted by KCØRPS on Thu, 03/06/2025 - 11:13

One 2000g non-exempt balloon was  launched on Sunday, March 23, 2025 from Deer Trail, Colorado, one day after launch was postponed due to weather (cloud cover greater than fifty percent and ground winds 10 mph or greater).  Sponsored by the Rocky Mountain Chapter of the National Defense Industrial Association (NDIA), the balloon carried experiments representing efforts of approximate

EOSS-367/368 Colorado Space Grant Consortium Fall Launch - Recap

KCØRPS's picture
Submitted by KCØRPS on Tue, 12/10/2024 - 15:09

Two 1500g exempt balloons were launched on Saturday February 1, 2025 from Deer Trail, Colorado. This flight was a twice-delayed (weather) launch of student-built payloads from Colordado Space Grant Consortium supported schools throughout Colorado. The balloons flew as follows (prelim data from KC0RPS' log):

EOSS-365/366 Ranum Innovation Campus, Evergreen High School, & Golden High School - Recap

KCØRPS's picture
Submitted by KCØRPS on Sun, 12/01/2024 - 14:56

On Saturday, December 7, 2024, two 3000g Heavy balloons were launched from Deer Trail, Colorado.

EOSS-363/364 Metro State University & Littleton EPIC Launch - Recap

KCØRPS's picture
Submitted by KCØRPS on Fri, 11/08/2024 - 16:38

On Saturday November 16, 2024 two 3000g non-exempt balloons were launced from Deer Trail Colorado as follows:

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