Two articles, one to be published in the journal “The Astrophysical Journal” and one in the journal “Monthly Notices of the Royal Astronomical Society”, describe studies of an anomalous event and an object cataloged as AT2018cow and therefore nicknamed “The Cow”. According to a team led by Raffaella Margutti of Northwestern University, who produced the article to be published in “The Astrophysical Journal”, it could be an anomalous supernova, tens of times brighter than normal that generated a black hole or a neutron star, while another team led by Paul Kuin of University College London (UCL), who produced the article to be published in “Monthly Notices of the Royal Astronomical Society”, it could be a black hole that destroyed a star.