The recent progress in the technical capabilities of the ground- and satellite-based observatories have made it possible to investigate the physical processes taking place in the sources by measuring their emission spectra in a large frequency range (multiwavelength astrophysics). Since there is a large number of currently operating telescopes (e.g., Neil Gehrels Swift observatory (Swift), Nuclear Spectroscopic Telescope Array (NuSTAR), Chandra, Fermi Large Area Telescope (Fermi LAT), HESS, MAGIC, etc.) and their data are mostly publicly available, multiwavelength astrophysics has become one of the fastest developing and most progressive fields of astrophysics. A remarkably large number of source classes discovered to date are confirmed to have a nonthermal spectrum ranging from the radio (10^7 Hz) to high and very high energy (~10^25 Hz) gamma-ray bands, among which the most interesting are blazars- an extreme subclass of the active galactic nuclei which have the jet exactly aligned toward the observer. The analyses of multiwavelength data accumulated from the blazar observations will allow to monitor the evolution of blazar variable emission in long time scales and by theoretical modeling of the obtained spectra to understand several fundamental jet features such as its magnetic field, particle energy distribution and density, the processes responsible for the particle acceleration and emission, etc. In this new project, the gamma-ray data accumulated by Fermi LAT during 2008-2018 from the observation of 500 bright blazars will be analyzed. Detailed light curves (emission flux changes in time) and spectra (from 100 MeV to 300 GeV) will be generated. We note that the data analyzed here will be made available to other scientists through a dedicated web page. This will be done within the Open Universe initiative under the auspices of COPUOS/UNOOSA. The project is coordinated by ICRANET, http://www.icranet.org.
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