The night sky is a dark place, with only the moon and stars to cast any light. But throughout the long winters high in the northern hemisphere there are nights that are illuminated with spectacular displays of green and blue light dancing across the skies. We are talking, of course, about the Northern Lights. The Aurora borealis, to give them their proper name.
Rollo (c. 846 – c. 931), baptised Robert and so sometimes numbered Robert I to distinguish him from his descendants, was a Norse nobleman of Norwegian or Danish descent and founder and first ruler of the Viking principality which soon became known as Normandy. His descendants were the Dukes of Normandy, and by later extension, the King of England.
It is well known that Viking explorers used the sun and stars to navigate across open seas, but what did they do when the sun and stars weren’t visible? For centuries legends have told of various tools that Vikings used to help navigate, among them the fabled Sunstone. Now, researchers believe they have finally found one of these stones. Until recently, nothing was found among Viking artifacts that matched descriptions from the sagas. However, researchers now believe the mythic
Iceland - Golden Circle Golden Circle" tour to Tþingvellir, the historic rift valley where the Icelandic parliament first convened in 930; Geysir, the geothermal hot spot that lent its name to all geysers; and the majestic Gullfoss waterfall. Sign up for an 8-hour bus tour, or for more flexibility, rent a car. Read more: http://www.frommers.com/destinations/iceland/254360#sthash.VCfDx2UA.dpbs#ixzz38GTQYmXp
This global view of Jupiter's moon, Io, was obtained during the tenth orbit of Jupiter by NASA's Galileo spacecraft on 19 September 1997 at a range of more than 500,000 km (310,000 miles). Io (which is slightly larger than Earth's moon) is the most volcanically active body in the solar system. Colors are enhanced. Credit: NASA/JPL/University of Arizona