Recent results from the observation of extragalactic gamma sources with the MAGIC telescope

The MAGIC telescope is the largest Cherenkov telescope worldwide, operating since late 2004. One of its main research topics is the discovery of extragalactic gamma-ray emitters at very high energies and high redshift, as active galactic nuclei. From the observations of such distant sources, it is also possible to study the nature of the extragalactic background light, and thanks to the time resolution achievable during high flaring emissions, to investigate on possible light propagation effects. The talk will present an overview of the most recent results concerning extragalactic sources.