ECLIPSE OF THE HARVEST MOON: According to folklore, this Friday's full
Moon is the Harvest Moon. For many observers, the usual luster of the
silver orb will be dimmed by a spooky shadow as the Moon experiences a
"penumbral lunar eclipse."
EARTH'S MAGNETIC FIELD CAUGHT RINGING
LIKE A BELL: This week a magnetic observatory in Norway recorded
almost pure sinusoidal oscillations in Earth's magnetic field--a
phenomenon unlike normal geomagnetic storms. The magnetic "ringing" was
accompanied by equally sinusoidal electric currents flowing through the
ground. The data and underlying physics are highlighted on today's
edition of http://spaceweather.com.