Tag: Arno Penzias
Confirming the Big Bang: The Recent Decades
The Big Bang theory also gives us an age for the universe. The latest estimate, based on several cosmological observations, is 13.80 +/- 0.02 billion years.
Confirming the Big Bang: The Early Decades
Cosmologists have come a long way since Edwin Hubble published that ratty looking plot of galaxy recession velocities versus distance.