RT @ESO: #ESOCastLight World’s largest array of gamma-ray telescope comes to Paranal #BiteSizedAstronomy #4K #UHD https://t.co/8qMoirw9u5 h…

RT @ESO: #ESOCastLight World’s largest array of gamma-ray telescope comes to Paranal #BiteSizedAstronomy #4K #UHD
https://t.co/8qMoirw9u5 h…