An artist’s drawing shows a large stellar-mass black hole pulling gas away from a companion star. Image Credit: NASA E/PO, Sonoma State University, Aurore Simonnet

An artist’s drawing shows a large stellar-mass black hole pulling gas away from a companion star. Image Credit: NASA E/PO, Sonoma State University, Aurore Simonnet

An artist's drawing shows a large stellar-mass black hole pulling gas away from a companion star. Image Credit: NASA E/PO, Sonoma State University, Aurore Simonnet