Astronomers have detected an 11-billion-year-old galaxy using the light it absorbs rather than the light it emits. This technique was necessary because the galaxy is being outshone by a nearby quasar.

Hubble Space Telescope discovers 11-billion-year-old galaxy hidden in a quasar's glare

Source: space
Source Link: https://www.space.com/hubble-elusive-11-billion-year-old-galaxy-light-absorption