Space & PhysicsAugust 1, 2014
Billions of Galaxies are Missing from the Cosmos
By the latest estimate, the observable universe contains 200 billion galaxies. Astronomers wonder: Why so few?
Stories by James E. Geach
Space & PhysicsMay 1, 2011
The Lost Galaxies
By the latest estimate, the observable universe contains 200 billion galaxies. Astronomers wonder: Why so few?