Einstein ring

An Einstein ring is a phenomenon where the light from a distant object, such as a galaxy or quasar, is bent into a ring shape by the gravitational field of a massive foreground object, like another galaxy. This effect is a consequence of Einstein's theory of general relativity.

Source: hyperphysics.phy-astr.gsu.edu

APODs including "Einstein ring"

Galaxy Lenses Galaxy from Webb

21/04/2025

Einstein Ring Surrounds Nearby Galaxy Center

26/02/2025

Simulation: Two Black Holes Merge

10/05/2024

A Molten Galaxy Einstein Ring

05/07/2022

When Black Holes Collide

11/04/2021

The Very Large Array at Moonset

09/10/2020

Simulation: Two Black Holes Merge

14/04/2019