Canadian Space Agency

The Wind Imaging Interferometer (WINDII) was launched on NASA’s Upper Atmosphere Research Satellite on 12 September 1991 and operated until 2003. Its role in the mission was to measure vector winds in the Earth’s atmosphere from 80 to 110 km, but its measurements extended to nearly 300 km. The...

Canada’s SCISAT is studying the complex chemical processes that affect the distribution of ozone in the upper atmosphere, especially over the Artic. From its orbit 650 kilometres above the Earth, its instruments use the light from sunrises and sunsets each day to identify more than 60 gases and...

The Northern Lights are a fascinating natural phenomenon. These animated shows in the night sky have contributed to the mythology, folklore and art of many cultures and civilizations in the Northern Hemisphere. In 2007, as part of the THEMIS Mission (for "Time History of Events and Macroscale...

MOPITT is a Canadian instrument aboard the Terra satellite. Since 1999, it has contributed to the study of environmental pollution by continuously scanning the troposphere to make long-term measurements of carbon monoxide concentrations. Initially planned for a five-year term, this experiment has...