A LARGE HOLE IN THE SUN'S ATMOSPHERE: A large hole has opened in the sun's atmosphere and it is spewing a stream of solar wind toward Earth. NOAA forecasters estimate a 65% chance of minor geomagnetic storms when the gaseous material arrives on July 24th. Such holes are primary sources of solar activity during solar minimum, both forming and staying open longer when sunspots are absent. Learn more on today's edition of Spaceweather.com
