The first results from AMS (official paper)
Comments on the AMS paper and hype
Starts with a Bang
Other cosmic-ray experiments
was launched in 2006 on a Russian satellite. The
can detect electrons and positrons.
Fermi Gamma-ray telescope
was launched in June 2008. One of its instruments is the
Large-Area Telescope (LAT);
perhaps you'd like to read
a technical description of LAT.
If you want to learn how this gamma-ray telescope can be used to detect electrons and positrons, read
Measurement of separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope.