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2023 October
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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
Archive
–
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