This artist's conception illustrates the decline in our universe's "birth-rate" over time. When the universe was young, massive galaxies were.
Baby Galaxies in the Adult Universe. Surveying thousands of nearby galaxies with its highly sensitive ultraviolet eyes, NASA's Galaxy Evolution.
A Universe of Stories: Adult Summer Reading List by DBRL_ADULTS - a staff- created list: This year, Summer Reading is all about the expanse.