Gravitational lensing is the bending of light by gravity, predicted by general relativity. A massive foreground object, such as a galaxy or cluster, distorts and magnifies the light of more distant objects behind it, sometimes smearing them into arcs or complete rings of light called Einstein rings. Lensing lets astronomers weigh dark matter, study extremely distant galaxies, and test gravity itself, and AI now finds new lenses in survey images faster than humans can.
Cosmology · Gravitational Lensing · Dark Matter
Mass warps space, and light must follow the curves. Galaxies are smeared into arcs, multiplied into quartets, and bent into perfect rings, a cosmic le...
Astrophysics · Machine Learning · Survey Astronomy
The Vera Rubin Observatory will produce 20 terabytes of imaging per night. Astronomy still functions as a science only because it has, very quietly, h...