The black hole named Cygnus X-1 formed when a large star caved in. This black hole pulls matter from the blue star beside it.
IMAGE: NASA, CXC, Melissa Weiss (CXC)
<a rel="nofollow" class="external text" href="https://webbtelescope.org/contents/media/images/4187-Image">Black Hole Cygnus X-1 (Illustration)</a>