Do other planets in the Solar System have magnetic fields?

Question

Are they pretty much the same as Earth's field?

Answer 1

For the inner planets besides earth, mercury has a very weak magnetic field. Venus and mars have no magnetic fields, but it is theorized they once did long ago. The moon too is thought to have once had a magnetic field. The four gas giants all have very strong magnetic fields. The sun, of course, has a gigantic magnetic field. As for pluto and other objects, nobody really knows but it is assumed they don't have magnetic fields.

Answer 2

The reason that planets have magentic fields is theat they have a molten metal core. As long as the planet's core is motlen and active, the magnetic fields exist.this phenomemon is similar to creation of eddy currents in moving metals under a magnetic field. the fact that mars does not have a significant magnetic field is that the core has cooled down so much that there is no activity there which in turn is the reason why fields do not exist. Any planet with a molten core will have a magnetic field. Jupiter has the most significant field in our solar system.

Answer 3

From UCLA Institute of Geophysics:

" It is likely that some of the early Martian atmosphere has been lost to space because Mars, like Venus has no substantial intrinsic magnetic field to protect the atmosphere from solar wind scavenging. "

Check the link for more information or search on "magnetic field " for other sites.

Answer 4

Only those planets have magnetic fields which have an iron core.

Answer 5

if they have cores filled with molten metal