Dark Sky Island
The gorgeous Isle of Sark, the smallest self-governing island in Europe, is located in the English channel 130 miles off the southern English coast. In January 2011 it became the world’s first “Dark Sky island” by controlling light pollution. The island’s single electricity source is an oil-fired power station, and there are no cars, streetlights or even paved roads: you can only get around by bike, horse, carriage or tractor-drawn bus. Due to the lack of light pollution, the Milky Way stretches gloriously overhead—from horizon to horizon across the pristine black sky.
The Milky Way is the galaxy in which Earth is contained. This name derives from its appearance as a dim “milky” glowing band arching across the night sky, in which the naked eye cannot distinguish individual stars.
2. Artist’s conception of the spiral structure of the Milky Way with two major stellar arms and a bar.
3. Illustration of the two gigantic X-ray/gamma-ray bubbles (blue-violet) of the Milky Way (center).
4. A false-colorinfrared image of the core of the Milky Way Galaxy taken by NASA’s Spitzer Space Telescope. Older cool stars are blue, dust features lit up by large hot stars are shown in a reddish hue, and the bright white spot in the middle marks the site of Sagittarius A*, the super-massive black hole at the center of the Galaxy.
The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula’s matter.
National Geographic: Expedition to Everest