When did astronomers first detect radio emissions from Jupiter?
Astronomers detected radio emissions from Jupiter in 1955. This observation hinted at a powerful magnetic field extending up to 40 megahertz.
Questions about Magnetosphere of Jupiter
Short answers, pulled from the story.
What is the source of Jupiter's magnetic field?
Jupiter's magnetic field originates from electrical currents within its outer core composed of liquid metallic hydrogen. This unique state allows for a different dynamo process than Earth's molten iron and nickel core.
How strong is Jupiter's equatorial magnetic field compared to Earth?
Measurements show an equatorial field strength of approximately 417 microteslas, making it twenty times stronger than Earth's. The magnetic moment reaches roughly 2.83 tesla cubic meters, which is about 20,000 times larger than Earth's value.
What happens when volcanic eruptions on Io eject sulfur dioxide gas into space?
This material forms a thick ring called the Io plasma torus near the moon's orbit. Strong volcanic activity dissociates the gas into ions like sulfur and oxygen through electron impacts.
When did Pioneer 10 provide definitive proof of Jupiter's magnetosphere?
Pioneer 10 flew past the planet in December 1973. The spacecraft provided the first definitive proof by measuring the field directly in space.