The Gemini North telescope and Subaru Telescope have been used to discover most distant merging quasars yet, "seen over 900 million years after the Big Bang." according to NoirLab.

Credit:
Images and Videos: International Gemini Observatory/NOIRLab/NSF/AURA/M. Garlick/P. Horálek (Institute of Physics in Opava)/T.A. Rector (University of Alaska Anchorage/NSF NOIRLab)/D. de Martin (NSF NOIRLab)/M. Zamani (NSF NOIRLab)/ESA/Hubble/NASA/M. Kornmesser/N. Bartmann (NSF NOIRLab)
Music: Stellardrone - In Time