New research suggests that a perplexing signal created by a pair of colliding black holes may have been warped by a space-time phenomenon known as gravitational lensing. This theory could finally explain the "impossible" size of the merging singularities, but it also poses a new problem.
Source: [Live Science](https://www.livescience.com/space/astronomy/an-impossible-black-hole-merger-may-finally-be-solved-thanks-to-einsteins-relativity-but-it-raises-an-even-bigger-mystery)