Stratospheric balloons

Did you know? Fact number 1

The volume of the largest open stratospheric balloons used by Centre National d'Etudes Spatiales (CNES) can be up to 1,200,000 m3.

Did you know? Fact number 2

The height of a deployed balloon, including the flight chain, is about 300 m, about half as tall as the CN Tower.

Did you know? Fact number 3

The envelope alone can be as high as a 35-floor building, or the height of the tower of Montreal's Olympic Stadium; and its diameter is equivalent to the size of 2 hockey rinks or 2 Airbus A-340s.

Did you know? Fact number 4

The area of the envelope, if deployed flat, is equivalent to approximately 8 soccer fields.

Did you know? Fact number 5

For more information on other types of balloons, visit the following website: (French only).

Stratos, the Canadian Space Agency's (CSA) stratospheric balloon program, was created in 2011 through the CSA's collaboration with the Centre National d'Études Spatiales (CNES). This program gives Canadian academia and industry the opportunity to test and validate new technologies and to perform scientific experiments at an altitude where only balloons can be operated. Stratos therefore contributes to the training and development of a highly qualified workforce: the next generation of Canadian engineers and scientists.

Strato Science 2015 Campaign

From August 12 to September 29, 2015, Canadian industry, universities and students from across the country will test their experiments in a near-space environment, thanks to the Canadian Space Agency (CSA)’s stratospheric balloon program, Stratos. More information on Strato Science 2015 Campaign

Stratos: the Canadian Space Agency Stratospheric Balloon Program

This video explains the Canadian Space Agency's Stratospheric Balloon Program, Stratos, and its benefits to Canada. The images were taken during the first balloon campaign in 2013 that took place in Timmins, Ontario, Canada.

Preparation of a balloon launch

This video demonstrates the different steps involved in the preparation of a stratospheric balloon launch. The images were filmed at the Timmins Stratospheric Balloon Base, in Ontario, Canada. (Credit: Canadian Space Agency)

Balloon launched during the Strato Science 2014 Campaign

Balloon launched during the Strato Science 2014 Campaign

(Credit: Canadian Space Agency)