In the early 1960s, physicists Penzias and Wilson detected a persistent noise at a wavelength of about 1 mm in their radio telescope that came from all directions in the sky due to
A) synchrotron emission from the Crab Nebula.
B) emission from newly formed stars in the Orion Nebula.
C) cellphone usage.
D) photons left over from the Big Bang.
E) television and radio broadcasting.

Question

Quizplus · Accepted Answer

Penzias and Wilson discovered the Cosmic Microwave Background Radiation, which is the afterglow of the Big Bang, present throughout the universe.

In the Early 1960s, Physicists Penzias and Wilson Detected a Persistent