View Full Version : Ancient Galactic Magnetic Fields Stronger than Expected

2008-Jul-23, 05:40 PM
The origin of magnetic fields in our universe is a mystery. But magnetic fields are a key part of the interstellar medium and scientists are finding they may play a major role in galactic formation, such as helping to form the spiral arms of galaxies. Until recently, however scientists believed the strength of [...]

More... (http://www.universetoday.com/2008/07/23/ancient-galactic-magnetic-fields-stronger-than-expected/)

2008-Jul-23, 08:08 PM
"The origin of magnetic fields in our universe is a mystery. "

What am I missing here? 99.999% of the visible universe is made of a quasi-neutral plasma. Any differential movement between the positive and negative ions will (a) produce an electric current (b) must produce a corresponding magnetic field. Hannes Alfvén deduced this around 1937.

2008-Jul-23, 10:42 PM
...But, recently a team of scientists looking back to probe the ancient universe as it existed 8 to 9 billion years ago has found that the magnetic fields of ancient galaxies were just as strong as they are today, prompting a rethinking of how our galaxy and others may have formed...
The formation theory was a guess, based upon limited information. New information that is inconsistent with prior guesses demands a lot of new thinking.