I saw a presentation by him on how he discovered Pluto. He said he had two photographs of the same small region of space and flipped them back and forth to find a white dot that moved. He said it was very tedious and he looked at lots of pairs of photographs. He was a very interesting presenter
scuzzy987 t1_j6ayyy5 wrote
Reply to comment by JJohnston015 in TIL that in 1930 astronomer Clyde Tombaugh discovered Pluto and in 2007 his ashes were aboard the first spacecraft sent to explore it. by Emu_Enough
I saw a presentation by him on how he discovered Pluto. He said he had two photographs of the same small region of space and flipped them back and forth to find a white dot that moved. He said it was very tedious and he looked at lots of pairs of photographs. He was a very interesting presenter