There is observational evidence that supports the theoretical conditions of the universe. Thefarthest back in the history of the universe this evidence goes is:
A)the moment of the Big Bang.
B)the end of the Planck epoch.
C)the beginning of GUT.
D)the end of the Radiation Era.
E)the Recombination Epoch.

Question

Quizplus · Accepted Answer

The Recombination Epoch occurred approximately 380,000 years after the Big Bang, when the universe had cooled enough for electrons and protons to combine into neutral atoms. This event left a signature in the cosmic microwave background radiation, which is observed today and provides evidence for the theoretical conditions of the early universe. This radiation contains information about the universe's temperature, density, and overall structure at that time, and its observations have been a cornerstone of modern cosmology. The Recombination Epoch, which occurred around 379,000 years after the Big Bang, is the farthest back in the history of the universe that observational evidence exists to support. This is because at this time, the universe became transparent to light, allowing us to observe the cosmic microwave background radiation that has been traveling through the universe since that time. This radiation provides detailed information about the conditions of the early universe, supporting the theoretical models and predictions.

There Is Observational Evidence That Supports the Theoretical Conditions of the Universe