Royal Institution for the Advancement of Learning/McGill University
The High-Energy Light Isotope eXperiment (HELIX) — The HELIX project will measure the energetic particles bombarding the Earth, known as cosmic rays, using a detector carried to an altitude of 45 km by a stratospheric balloon launched from the coast of Antarctica. 

The flight will result in data that will lead to a deeper understanding of the magnetic fields and interstellar material in our region of the Milky Way galaxy. In particular, it will help determine the origin of the rising fraction of energetic antimatter which has been found in the cosmic rays.