Back حلقة أينشتاين Arabic আইনস্টাইন বলয় Bengali/Bangla Anell d'Einstein Catalan Einsteinův prstenec Czech Einsteinring German Δακτύλιος του Αϊνστάιν Greek Anillo de Einstein Spanish حلقه اینشتین Persian Anneau d'Einstein French Anel de Einstein Galician
An Einstein ring, also known as an Einstein–Chwolson ring or Chwolson ring (named for Orest Chwolson), is created when light from a galaxy or star passes by a massive object en route to the Earth. Due to gravitational lensing, the light is diverted, making it seem to come from different places. If source, lens, and observer are all in perfect alignment (syzygy), the light appears as a ring.