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150 yrs ago: Wm Huggins begins 1st spectroscopic exam of a nova. #astronomy #histstm https://t.co/UoSmsEplxv https://t.co/EFuZHU6JLv
150 yrs ago: Wm Huggins begins 1st spectroscopic exam of a nova. #astronomy #histstm https://t.co/UoSmsEplxv https://t.co/EFuZHU6JLv