Solar X-Rays: Basically, this is when a solar flare is thrown from the sun and then crashes back onto its surface. When this happens, solar x-rays and other radiation is forced out towards the Earth at very high speeds.

Geomagnetic Storm: A geomagnetic storm happens when charged particles from the sun (or solar wind) hit the Earth. Geomagnetic storms affect all types of magnetic fields, and can even interfere with radio transmissions.

Moon phases: The moon's position has an affect on magnetic fields that even controls our ocean's tides. Five Days before, during and after a full moon there seems to be an increase in paranormal activity.

For more information, visit the NOAA Web site and do a search on 'moon phases'.