Professor Brian Cox about 20 billion possible Earths in the Milky Way #astronomyadventure #astronomylife #Astronomy #astronomical #astronomyphotography #spacescience #space #Spaceexploration #spacephotos #spacation #spacefacts #universefacts #astronomyfacts #ProfessorBrianCox #BrianCox #planetearth #earthfacts | Cosmo Madness

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There's a black hole in our galaxy, and it's not far from Earth

How We Found Earth's Position Within The Milky Way

Where is Earth in the Milky Way?

The Milky Way galaxy is probably much bigger than we thought