How Many Planets are There in the Galaxy?

By Matthew Williams October 24, 2016
How Many Planets are There in the Galaxy?

Number of Planets per Star:

Number of Stars:

Habitable Exoplanets:

  • Wikipedia - The Milky Way Galaxy

  • NASA Exoplanet AArchive

  • NASA - The Milky Ways 100 billion planets

  • NASA - How Many Stars in the Milky Way

  • HubbleSite - The Milky Way Contains at Least 100 Billion Planets According to Survey

    • Matthew Williams

    Matthew Williams

    Matt Williams is a space journalist, science communicator, and author with several published titles and studies. His work is featured in The Ross 248 Project and Interstellar Travel edited by NASA alumni Les Johnson and Ken Roy. He also hosts the podcast series Stories from Space at ITSP Magazine. He lives in beautiful British Columbia with his wife and family. For more information, check out his website.