Yesterday, I posted a video showing simulation of a binary pair of black holes orbiting one another.. This simulation shows a point of view between the two black holes. The black holes distort the view of the background stars, capturing their light to produce black hole silhouettes. A distinctive feature called a photon ring outlines the black holes. The background is a mosaic of the images covering the entire sky as observed by ESA’s Gaia mission.
Video Credit: NASA