... Tonight's Sky . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... Infant galaxies merging near cosmic dawn . Astronomers have discovered a far-flung trio of primitive galaxies nearly 13 billion light-years from Earth. ... Even more interesting, these galaxies appear poised to merge into a single massive galaxy, which could eventually evolve into something akin to the Milky Way. ... Most distant galaxy: Hubble breaks cosmic distance record . ...