Einstein Ring

  • The James Webb Space Telescope recently captured an image of an almost perfect Einstein ring. It was formed from the light of a distant galaxy SPT-S J041839-4751.8, which is around 12 billion light-years away from our planet.
  • An Einstein ring is a ring of light created when light from a galaxy, star or other light-emitting cosmic objects passes near a massive object before it reaches the Earth.
  • When this happens, gravitational lensing causes the light to get diverted and if the source, lens and the observing element are all in perfect alignment, this light appears as a ....
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