Detecting Planetary Magnetism
This diagram shows the magnetosphere of Jupiter.
A magnetometer is an instrument for measuring magnetic fields. Many spacecraft carry magnetometers to measure the magnetic fields around planets. When a spacecraft makes those measurements, what do the measurements tell us?
The planet might have a global magnetic field surrounding it. Earth does, which is why compasses work. So do Mercury, Jupiter, Saturn, Uranus, and Neptune. Electrical currents in Earth's core generate its magnetic field. The core consists of iron and nickel, which are good conductors of electricity. Similarly, Mercury has an iron core which produces its field. Areas surrounding the cores of Jupiter and Saturn are filled with liquid metal hydrogen. This strange substance exists only at the high pressure....To Read More Click Here
Posted by Jay Roberts at 02:19 AM | Permalink