TRANSIT OF MERCURY: Today, May 9th, Mercury passed directly between Earth and the sun, producing a rare transit of Mercury’s inky-black disk across the solar surface. Images of the event are pouring into our image gallery from around the world. Browse and enjoy!
STRONG GEOMAGNETIC STORM: For the past 24+ hours, Earth’s magnetic field has been reverberating with geomagnetic storms. At their most intense on May 8th,G3-class storms sparked bright auroras around both poles, parts of four continents, and more than a half a dozen US states. In Antarctica, everything turned gre