Light delayed by seven years as it is bent around a galaxy cluster

The airy from a quasar was delayed by astir 2458 days arsenic the way it is travelling to america has been bent by the gravity from a clump of galaxies

Space 23 June 2022

By Alex Wilkins

The 4 achromatic dots astir the centre of this representation are each airy coming from the aforesaid quasar

ESA/NASA/Keren Sharon (Tel-Aviv University)/Eran Ofek (CalTech)

Light from a quasar has been delayed for 7 years arsenic its way to america was diverted by the gravity from a cluster of galaxies. It is the longest recorded hold of its benignant truthful far.

When an entity successful abstraction is monolithic enough, it tin enactment arsenic a gravitational lens that bends airy astir it. For those watching from Earth, it tin nutrient aggregate images of things down the large …