The ring of darkness in the galaxy cluster Cl 0024 17 indicates the presence of dark matter. New research explores the possibility that dark matter is made up of particles that weigh about as much as a human cell.
This stellar swarm is (NGC one of the densest of the 147 known globular star clusters in the Milky Way galaxy. Located about light-years from Earth, contains hundreds of thousands of stars, all held together by their mutual gravitational attraction.
The Arches Cluster is the densest known star cluster in the Milky Way, and is located about 100 light years distant, in the constellation Sagittarius. So beautiful. How can people not know heaven is a real, physical place?
The Horsehead Nebula lies in the constellation Orion. Part of a big, dark, molecular cloud, it is one of the most recognizable nebulae you can find. The nebula was discovered in the late on a photographic plate.