How was CMB radition discorved?

Answer 1

Cosmic Microwave Background (CMB) radiation was discovered in 1965 by Arno Penzias and Robert Wilson, who were conducting experiments with a radio telescope in New Jersey. While trying to eliminate noise from their measurements, they detected a persistent, uniform microwave signal that seemed to come from all directions in space. This radiation was later identified as the remnant heat from the Big Bang, providing crucial evidence for the Big Bang theory and helping to establish the field of cosmology. Their discovery earned them the Nobel Prize in Physics in 1978.