Scientists were shocked to discover those rocks displayed magnetic properties. How could that be?
They also figured out that some of those moon rocks could possess magnetic north and south as well as individual magnetic fields. That sure started some serious scientific head scratching as to how this could be a fact.
They knew magnetism was possible if the rocks were comprised of the right minerals and, under the right conditions, like the rock cooling while present in a magnetic field. Yes, it was possible the rocks could be magnetic.
How does a magnetic field occur?