"In this paper, we discuss Babylonian observations of a “massing of the planets” reported in two Astronomical Diaries, BM 32562 and BM 46051. This extremely rare astronomical phenomenon was observed in Babylon between 20 and 30 March 185 BC shortly before sunrise when all five planets were simultaneously visible for about 10 to 15 min close to the horizon in the eastern morning sky."

de Jong, T., Hunger, H. Babylonian observations of a unique planetary configuration. Arch. Hist. Exact Sci. 74, 587–603 (2020). https://doi.org/10.1007/s00407-020-00252-1 #OpenAccess #OA #Science #STEM #Astronomy #History #Babylon #Academia #Academic #Academics @science