What is Einstein's Ring?

Answer 1

In observational astronomy, an Einstein ring happens when two galaxies are aligned perfectly. It is the deformation of light from a star or galaxy into a ring that is caused by gravity bending the light from another galaxy.

Answer 2

An Einstein ring is light deforming into a ring through gravitational lensing of the source's light by an object with an extremely large mass (a galaxy, or a black hole). This occurs when the source, lens and observer are all aligned.

The first complete Einstein ring, designated B1938+666, was discovered by the Hubble Space Telescope in 1998.

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Answer 3

Einstein's Ring is a phenomenon in astronomy where the light from a distant object is bent into a ring-like structure by the gravitational lensing effect of a massive object in the foreground, as predicted by Albert Einstein's theory of general relativity. It occurs when the alignment between the observer, the lensing object, and the distant source is nearly perfect. Einstein's Ring illustrates the bending of light around massive objects, providing valuable insights into the properties of gravity and the distribution of matter in the universe.