Template:POTD/2023-10-17

Picture of the day

The Holmdel Horn Antenna is a large microwave horn antenna that was used as a satellite communication antenna and radio telescope during the 1960s at Bell Telephone Laboratories in Holmdel Township, New Jersey, United States. It was designated a National Historic Landmark in 1988 because of its association with the research work of two radio astronomers, Arno Penzias and Robert Wilson, who used it to discover the cosmic microwave background radiation (CMBR) that permeates the universe. This helped change the science of cosmology, the study of the history of the universe, from a field for unlimited theoretical speculation into a discipline of direct observation. In 1978, Penzias and Wilson received the Nobel Prize in Physics for their discovery.Photograph credit: NASA; restored by Bammesk