Nobel Laureate Arno Penzias, Key Contributor to Big Bang Theory, Dies at 90

Penzias and colleague Robert W. Wilson's discovery of cosmic microwave background radiation in 1964 revolutionized the field of cosmology.

Arno A. Penzias, Nobel laureate in physics, has passed away at the age of 90 due to complications from Alzheimer’s disease.
Penzias, along with Robert W. Wilson, discovered cosmic microwave background radiation in 1964, providing key evidence for the Big Bang Theory.
Their discovery helped dispel the steady-state theory, which proposed a static, unchanging universe, and led to the widespread adoption of the Big Bang Theory.
Penzias was born in Munich in 1933 and fled Nazi Germany as a child, settling in the United States.
He spent nearly four decades at Bell Laboratories, and his work marked a transition from a more philosophical approach to cosmology to an era of observational cosmology.