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The Fermi Large Area Telescope has provided the measurement of the highenergy (20 GeV to 1 TeV) cosmic ray electrons and positrons spectrum withunprecedented accuracy. This measurement represents a unique probe for studyingthe origin and diffusive propagation of cosmic rays as well as for looking forpossible evidences of Dark Matter. In this contribution we focus mainly onastrophysical sources of cosmic ray electrons and positrons which include thestandard primary and secondary diffuse galactic contribution, as well as nearbypoint-sources which are expected to contribute more significantly to higherenergies. In this framework, we discuss possible interpretations of Fermiresults in relation with other recent experimental data on energetic electronsand positrons (specifically the most recent ones reported by PAMELA, ATIC,PPB-BETS and H.E.S.S.).

Possible Interpretations of the High Energy Cosmic Ray Electron Spectrum measured with the Fermi Space Telescope