There are over 900 <a href="/the_universe/uts/megalith.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">rings of stone</a> located in the British Isles. The most famous of these stone rings is of course, <a href="/the_universe/uts/stonehenge.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Stonehenge</a>. The stones of Stonehenge were put in place between 3,000 B.C and 2,000 B.C. by neolithic people.Some speculate that the site was built as a temple of worship of the ancient Earth deities. Some say it was used as an <a href="/the_universe/uts/stonehenge_astro.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">astronomical observatory</a> of sorts. Still others say it was a burial ground.<p><small><em> Image courtesy of Corel Photography.</em></small></p>Stars don't last forever. Occasionally, a star bigger than our Sun will end its life in a huge explosion, called a <a href="/the_universe/supernova.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">supernova</a>. The center of the star collapses in less than a second, blowing away the outer layers of the star. There are many beautiful images of supernova remnants, the expanding shell of gas made up of the outer layers of the original star. This image is the Vela Supernova Remnant.<p><small><em>Image courtesy of the Anglo-Australian Observatory/Royal Observatory Edinburgh</em></small></p>On November 7, 2013, Typhoon Haiyan (Yolanda in the Philippines) made landfall, with imated wind speeds of ~315 km/hr - the strongest <a href="/earth/Atmosphere/hurricane/intensity.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">tropical cyclone</a> to make landfall in recorded history. As Haiyan moved across the Philippines before reaching Vietnam and China, its <a href="/earth/Atmosphere/wind.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">winds</a> and <a href="/earth/Atmosphere/hurricane/surge.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">storm surge</a> left devastation in its wake, leading to massive loss of life, destruction of homes, and hundreds of thousands of displaced inhabitants. <a href="http://www.cnn.com/2013/11/09/world/iyw-how-to-help-typhoon-haiyan/index.html">How to Help</a><p><small><em>Image courtesy of COMS-1, SSEC, University of Wisconsin-Madison</em></small></p>Anti-crepuscular rays are beams of sunlight that appear to converge on a point opposite the sun. They are similar to crepuscular rays, but are seen opposite the sun in the sky. Anti-crepuscular rays are most frequently visible near sunrise or sunset. This photo of anti-crepuscular rays was taken at sunset in Boulder, Colorado. Crepuscular rays are usually much brighter than anti-crepuscular rays.<p><small><em> Image Courtesy of Carlye Calvin</em></small></p>New observations by the MESSENGER spacecraft provide support for the hypothesis that Mercury harbors abundant water ice and other frozen volatile materials in its permanently shadowed (shown in red) polar craters. Areas where polar deposits of ice imaged by Earth-based radar are shown in yellow.<p><small><em>Image courtesy of NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington/National Astronomy and Ionosphere Center, Arecibo Observatory</em></small></p>According to <a href="http://www.jpl.nasa.gov/news/news.php?release=2013-277">NASA scientists</a>, the Voyager 1 spacecraft entered interstellar space in August 2012, becoming the first spacecraft to leave the <a href="/our_solar_system/solar_system.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">solar system</a>. The space probe is about 19 billion km from the <a href="/sun/sun.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Sun</a>. <a href="/space_missions/voyager.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Voyager 1 and 2</a> were launched in 1977 on a <a href="/space_missions/voyager.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">mission</a> that flew them both by <a href="/jupiter/jupiter.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Jupiter</a> and <a href="/saturn/saturn.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Saturn</a>, with Voyager 2 continuing to <a href="/uranus/uranus.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Uranus</a> and <a href="/neptune/neptune.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Neptune</a>. Voyager 2 is the longest continuously operated spacecraft. It is about 15 billion km away from the <a href="/sun/sun.html&edu=elem&dev=1/earth/Atmosphere/moons/�/earth/climate/year_wo_summer.html�">Sun</a>.<p><small><em>Image courtesy of NASA</em></small></p>


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