How Do Einstein Rings Help Us See the Edge of the Universe?
Mahtab A Quddusi (noreply@blogger.com)
Einstein Rings: Windows to the Edge of the Universe Gravitational lensing, predicted by Einstein’s general relativity, occurs when a massive galaxy or cluster bends and magnifies light from a background source. In rare cases of near-perfect alignment, the background galaxy appears as an Einstein ring – a near-circular halo of light. Such rings act as “natural telescopes,” boosting the brightness of faint high-redshift galaxies and revealing details otherwise too weak to see. Observatories like H