With a length of 428 megaparsecs, or around 1.39 billion light-years, the superstructure is the biggest ever spotted.

Oumuamua and Comet Borisov in 2017 and 2019, respectively, created a surge of interest. What were they? Where did they come ...

Astronomers have identified an unprecedented cosmic titan—a vast superstructure of galaxies stretching 1.3 billion ...