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Composition of the Cosmos

Composition of the Cosmos
This diagram shows the ingredients that make up the universe. Astronomers now realize that the universe's main ingredient is "dark energy," a mysterious form of energy that exists between galaxies. The next largest constituent is dark matter, which is an unknown form of matter. The rest of the universe consists of ordinary matter. Most of it is locked up in stars and coluds of gas. A tiny fraction of this matter is composed of heavier elements, the stuff of which humans and planets are made.
  • Release Date
    April 2, 2001
  • Science Release
    Blast from the Past: Farthest Supernova Ever Seen Sheds Light on Dark Universe
  • Credit
    Credit: Ann Feild (STScI)

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Last Updated
Mar 28, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov