U.S. Department of Energy

Pacific Northwest National Laboratory

The Visible Universe

The Visible Universe includes everything that can be “seen” by the electromagnetic radiation it emits. This includes not just human-visible matter like stars and planets, but also sources such as the cosmic microwave background and astronomical radio, x-ray and gamma ray sources. Dark Matter and Dark Energy are explicitly excluded from the Visible Universe.

Type of Science: 
| Pacific Northwest National Laboratory