[ noun ] (astronomy) the largest planet and the 5th from the sun; has many satellites
Used in print(Cornell H. Mayer, "Radio Emission of the Moon...)
Radio_observations of Venus and Jupiter have already supplied unexpected experimental data on the physical conditions of these planets .
For the case of Jupiter , the radio_emission spectrum is definitely not like the spectrum of a black-body radiator , and it seems very likely that the radiation reaching the earth is a combination of thermal radiation from the atmosphere and non thermal components .
The radio_emission of a planet was first detected in 1955 , when Burke and Franklin ( 1955 ) identified the origin of interference like radio_noise on their records at about 15 meters wave_length as emission from Jupiter .
Steady radiation which was presumably of thermal origin was observed from Venus at 3.15 and 9.4 cm , and from Mars and Jupiter at 3.15 cm in 1956 ( Mayer , McCullough , and Sloanaker , 1958 a , b , c ) , and from Saturn at 3.75 cm in 1957 ( Drake and Ewen , 1958 ) .
In the relatively short time since these early observations , Venus has been observed at additional wave_lengths in the range from 0.8 to 10.2 cm , and Jupiter has been observed over the wave-length range from 3.03 to 68 cm .