<p style="text-align:center"></p> <p>Atmospheric physicist Nick Gorkavyi missed witnessing an event of the century last winter when a meteor exploded over his hometown of Chelyabinsk, Russia. From Greenbelt, Md., however, NASA’s Gorkavyi
<p style="text-align: center"> </p><p>The larger of the two moons of Mars, Phobos, passes directly in front of the other, Deimos, in a new series of sky-watching images from NASA’s Mars rover
AAVSO Alert Notice 489<br /> Nova Delphinus 2013 = PNV J20233073+2046041<br /> August 16, 2013 <p><strong>Event:</strong> Nova Del 2013 = PNV J20233073+2046041</p> <p><strong>Discovered by:</strong> Koichi Itagaki (Teppo-cho, Yamagata, Japan), reported by S. Nakano (Sumoto,