An article published in the journal “Monthly Notices of the Royal Astronomical Society” reports a study on the type Ib supernova cataloged as 2019yvr and on its progenitor star, which is enveloped by hydrogen layers that are unexpected in that type of supernova. A team of researchers led by Charles Kilpatrick, a postdoctoral fellow at Northwestern University, used observations made with the Hubble Space Telescope about 2.6 years before the supernova to examine the progenitor star, a yellow supergiant with characteristics very different from those they generally generate a type Ib supernova. One possibility regarding the hydrogen missing in the supernova is that it was snatched from this star by a companion.