I would like to show this simulation by ESA's Planck Satellite. It has traced a map of the first light of the Universe. CMB filling all Universe. It is an important source of data on the Early Universe because is the oldest electromagnetic radiation in the Universe, dating during the "Era of recombination", 380,000 years from the beginning. credit: ESA.IT//// ESA/PLANCK ✍: @glamour_physics | Space Discoverer

Our Planck satellite has... - ESA - European Space Agency