In today’s paper, astronomer’s describe a newly-discovered Einstein ring in the Sculptor constellation.
Pairs of occulting galaxies allow for the dust in galaxies to be mapped very accurately and give insight into the attenuation law in the outskirts of galaxies.
By searching for Lyman-alpha emission lines, astronomers have confirmed one of the most distant galaxies yet, helping shed light on the very earliest galaxies and their formation.
How did the universe go from being neutral and opaque to transparent and reionized at z ~ 6? Today’s paper gives us some observational evidence for what might be responsible.