That's the basic idea behind new research in The Astrophysical Journal titled "Primordial Black Hole Triggered Type Ia Supernovae. "The infall of these PBH into a white dwarf could be one triggering mechanism of Type Ia supernovae (SNe Ia)." "We show that these PBH-triggered SNe Ia behave similarly to ordinary SNe Ia, where higher metallicity flavors the production of Mn and Ni," the authors write. With that, they determined the fraction of all SNe Ia that could plausibly have come from PBH-triggered SNe Ia. Their results show that these supernovae could've been a major contributor to Type Ia SN, especially in the early Universe.