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1943 - Identification of Cygnus A as the first recognized radio galaxy established a new class of astronomical objects and helped advance our understanding of high-energy processes in the universe.

1941 - Grote Reber's radio survey of the sky was the first systematic survey in radio astronomy, leading to the development of radio maps and the identification of new radio sources.

1965 - The discovery of the Cosmic Microwave Background Radiation was pivotal in supporting the Big Bang theory, providing evidence for the birth of the universe.

1963 - The first quasar, 3C 273, was discovered via its radio emission. Quasars have been essential in understanding supermassive black holes and the distant universe.

1967 - The discovery of pulsars confirmed predictions of neutron stars and opened a new window in understanding the endpoints of stellar evolution.

1951 - The detection of the 21cm line of neutral hydrogen has had profound implications for the study of the structure and dynamics of galaxies.

2008 - Direct imaging of the radio source Fomalhaut b was a significant leap in the direct detection and study of exoplanets.

1932 - The detection of radio waves from outside the Earth's atmosphere was a major milestone in the field of radio astronomy, indicating astronomical sources of radio emission.

1974 - The identification of Sgr A* has provided crucial evidence for the existence of supermassive black holes at the centers of galaxies.

1942 - Solar radio emissions were first detected during World War II, bringing to light the complex radio-emission processes occurring in the Sun's atmosphere.

1912 - The discovery of cosmic rays, high-energy particles from space, was significant for studying high-energy processes beyond Earth and for particle physics.

1974 - The discovery of radio jets emanating from the galaxy M87 provided evidence for the phenomena of relativistic jets and the active nuclei of galaxies.

2007 - Fast Radio Bursts are millisecond-long bursts of radio waves in space, and their discovery has opened up a new field of high-energy astrophysics to study.

1982 - The discovery of the first millisecond pulsar, PSR B1937+21, has provided insight into the history and evolution of neutron stars, as well as potential new tests of general relativity.

1979 - The discovery of the first gravitational lens doubled quasar, known as Q0957+561, confirmed the theory of general relativity on a cosmic scale and allowed for new cosmological measurements.

1955 - The detection of radio waves from Jupiter provided the first evidence of radio emissions from planets, leading to further studies of planetary magnetic fields and auroras.

2020 - The first detection of radio emission from a known exoplanet has implications for understanding magnetic fields and the interior of planets outside our solar system.

1937 - The construction of the first radio telescope by Grote Reber marked the beginning of dedicated instruments for observing the universe in radio wavelengths.

1963 - The discovery of molecules in space, starting with the hydroxyl radical (OH), has transformed our understanding of the chemistry of the universe.