PAMELA (Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) is an operational cosmic ray research module attached to an Earth orbiting satellite. PAMELA was launched on 15 June 2006 and is the first satellite-based experiment dedicated to the detection of cosmic rays, with a particular focus on their antimatter component, in the form of positrons and antiprotons. Other objectives include long-term monitoring of the solar modulation of cosmic rays, measurements of energetic particles from the Sun, high-energy particles in Earth's magnetosphere and Jovian electrons. It is also hoped that it may detect evidence of dark matter annihilation.
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