Lone Black Hole Passes in Front of Star (Ground-Based View)
Depicts: Starfield in the Milky Way containing Black Holes
Copyright: NOAO, Cerro Tololo Inter-American Observatory
Two images of a crowded starfield as seen through a ground-based telescope show the subtle brightening of a star due to the effect of gravitational microlensing, where an invisible but massive foreground object passes in front of the star and amplifies its light.
Last Update: 1 September 2019