Fermi and the surprises of the gamma-ray sky

The Large Area Telescope (LAT), the main instrument onboard Fermi, has discovered more than two thousand new GeV sources and unveiled new classes of gamma-ray emitters. Being a quite versatile instrument, the LAT has been also used to detect also charged particles (e.g. electrons and positrons), thus contributing to a better understanding of cosmic ray physics.

We will report on the status of the Fermi observatory and highlight the most recent science results.