"In this paper, we present the discovery, in the Abell 2744 cluster field, of a two-armed, grand-design spiral galaxy, with a redshift of z ∼4, when the universe was only ∼1.5 billion years old.

Their work could well revolutionize our understanding of the primordial Universe. Grand-design spiral galaxies are characterized by their well-defined and symmetrical spiral arms, which extend from a ...

This innovation could help uncover secrets of the early universe, including the Epoch ... ancient light with unprecedented precision. Their design represents a significant improvement over ...