Astronomers using ALMA have confirmed one of only two known quasar pairs at redshift 5.7, observed in merging galaxies less than a billion years after the Big Bang.
J2037–4537 Quasar pair designation
Less Than 1 Billion Years Old Universe age at observation
5.7 Redshift
Only 2 Known Confirmed quasar pairs at z>5
<1 Billion Years universe age at observation
2 Known Systems confirmed quasar pairs at z>5