Pickering’s Triangle or Fleming’s Triangular Wisp, a faint, filamentous structure in the Veil, was observed by Williamina Fleming, in 1904. 

At the time, Williamina was employed as a “Harvard Computer”, a group of women who carried out mathematical computations. As was commonly done at the time, her discovery was named for the male astronomer, Edward Charles Pickering, she worked for. 

Fleming was responsible for numerous astronomical discoveries, including dozens of nebulae and hundreds of stars. Today, she is rightly remembered for her tremendous contributions to astronomical science.