Scientists didn't even know how to look for this type of black hole until now, thanks to a new study.
The extremely swole collapsed star is so big that it defies what we know about how big neutron stars can get.
“If it turns out to be right, then we’ve confirmed a new type of star system. It’s that fundamental.”
Observing the light from neutron stars provided a baseline to measure the effects of extra dimensions on the propagation of gravitational waves through space.