The Great Rift or Dark Rift is a darkened swath of the Milky Way where new stars are forming. It's best seen from a rural location away from light pollution.
The Eagle Nebula - aka Messier 16 or M16 - is home to several well-known cosmic structures, including the stunning Pillars of Creation and Stellar Spire.
Myriads of galaxies, visible only to those with medium-to-large telescopes, shine among the stars in the "Realm of the Galaxies." Study of the Coma Cluster of galaxies aided in the discovery of dark matter.