New Earth Like Planet

This artist's conception shows the inner four planets of the Gliese 581 system and their host star, a red dwarf star only 20 light years away from Earth. (Image credit: Lynnette Cook, NASA)

The planet, dubbed "Gliese 581g," is the sixth known planet found orbiting the red dwarf known as Gliese 581, found within the constellation of Libra. The planet was found by teams at the University of California (UC) Santa Cruz, and the Carnegie Institution of Washington, after nearly a decade of observations using the W. M. Keck Observatory in Hawaii.

Petra Photos

The Treasury at Petra

The narrow passage (Siq) that leads to Petra

El Deir ("The Monastery")

Map of Petra

Urn Tomb

Petra (Greek "πέτρα" (petra), meaning rock; Arabic: البتراء, Al-Batrāʾ) is a historic and archaeological city in the Jordanian governorate of Ma'an that has rock cut architecture and a water conduits system. Established sometime around the 6th century BC as the capital city of the Nabataeans, it is a symbol of Jordan as well as its most visited tourism attraction. It lies on the slope of Mount Hor in a basin among the mountains which form the eastern flank of Arabah (Wadi Araba), the large valley running from the Dead Sea to the Gulf of Aqaba. Petra has been a UNESCO World Heritage Site since 1985.

The site remained unknown to the Western world until 1812, when it was introduced by Swiss explorer Johann Ludwig Burckhardt. It was described as "a rose-red city half as old as time" in a Newdigate Prize-winning sonnet by John William Burgon. UNESCO has described it as "one of the most precious cultural properties of man's cultural heritage." Petra was chosen by the BBC as one of "the 40 places you have to see before you die".

Machu Picchu Photos

Map of Machu Picchu

Temple of the Sun at Machu Picchu

View of the city of Machu Picchu in 1911

Machu Picchu is a pre-Columbian Inca site located 2,430 metres (7,970 ft) above sea level. It is situated on a mountain ridge above the Urubamba Valley in Peru, which is 80 kilometres (50 mi) northwest of Cuzco and through which the Urubamba River flows. Most archaeologists believe that Machu Picchu was built as an estate for the Inca emperor Pachacuti (1438–1472). Often referred to as "The Lost City of the Incas", it is perhaps the most familiar icon of the Inca World.

The Incas started building the estate around AD 1400 but it was abandoned as an official site for the Inca rulers a century later at the time of the Spanish conquest of the Inca Empire. Although known locally, it was unknown to the outside world before being brought to international attention in 1911 by the American historian Hiram Bingham. Since then, Machu Picchu has become an important tourist attraction and, since it was not found and plundered by the Spanish after they conquered the Incas, it is important as a cultural site.
Machu Picchu was declared a Peruvian Historical Sanctuary in 1981 and a UNESCO World Heritage Site in 1983. In 2007, Machu Picchu was voted one of the New Seven Wonders of the World in a worldwide Internet poll.

Machu Picchu was built in the classical Inca style, with polished dry-stone walls. Its primary buildings are the Intihuatana, the Temple of the Sun, and the Room of the Three Windows. These are located in what is known by archaeologists as the Sacred District of Machu Picchu. In September 2007, Peru and Yale University reached an agreement regarding the return of artifacts which Hiram Bingham had removed from Machu Picchu in the early twentieth century.

Germany Flag Photos

The flag of Germany is a tricolour consisting of three equal horizontal bands displaying the national colours of Germany: black, red and gold.

Stonehenge Photos

Stonehenge is a prehistoric monument located in the English county of Wiltshire, about 3.2 kilometres (2.0 mi) west of Amesbury and 13 kilometres (8.1 mi) north of Salisbury. One of the most famous sites in the world, Stonehenge is composed of earthworks surrounding a circular setting of large standing stones. It is at the centre of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.

Archaeologists had believed that the iconic stone monument was erected around 2500 BC, as described in the chronology below. One recent theory, however, has suggested that the first stones were not erected until 2400-2200 BC, whilst another suggests that bluestones may have been erected at the site as early as 3000 BC (see phase 1 below). The surrounding circular earth bank and ditch, which constitute the earliest phase of the monument, have been dated to about 3100 BC. The site and its surroundings were added to the UNESCO's list of World Heritage Sites in 1986 in a co-listing with Avebury Henge monument. It is a national legally protected Scheduled Ancient Monument. Stonehenge is owned by the Crown and managed by English Heritage, while the surrounding land is owned by the National Trust.

Archaeological evidence found by the Stonehenge Riverside Project in 2008 indicates that Stonehenge served as a burial ground from its earliest beginnings. The dating of cremated remains found on the site indicate burials from as early as 3000 BC, when the initial ditch and bank were first dug. Burials continued at Stonehenge for at least another 500 years.

Stephen Hawking Photos

Stephen William Hawking, CH, CBE, FRS, FRSA (born 8 January 1942) is a British theoretical physicist and cosmologist, whose scientific career spans over forty years. His books and public appearances have made him an academic celebrity and he is an Honorary Fellow of the Royal Society of Arts, a lifetime member of the Pontifical Academy of Sciences, and in 2009 was awarded the Presidential Medal of Freedom, the highest civilian award in the United States.

Pope Benedict XVI Photos

Pope Benedict XVI (Latin: Benedictus PP. XVI; Italian: Benedetto XVI; German: Benedikt XVI.; born Joseph Alois Ratzinger on 16 April 1927) is the 265th and current Pope, by virtue of his office of Bishop of Rome, the head of the Catholic Church and, as such, Sovereign of the Vatican City State. He was elected on 19 April 2005 in a papal conclave, celebrated his Papal Inauguration Mass on 24 April 2005, and took possession of his cathedral, the Basilica of St. John Lateran, on 7 May 2005. A native of Bavaria, Pope Benedict XVI has both German and Vatican citizenship. He succeeded John Paul II.

Canada Flag Photos

The National Flag of Canada, also known as the Maple Leaf, and l'Unifolié (French for "the one-leafed"), is a red flag with a white square in its centre, featuring a stylized 11-pointed red maple leaf. Its adoption in 1965 marked the first time a national flag had been officially adopted in Canada to replace the Union Flag.

Christ the Redeemer Photos

A view of the statue, as seen from a helicopter

The statue from behind

Christ the Redeemer (Portuguese: O Cristo Redentor, formerly Portuguese: Christo redemptor) is a statue of Jesus Christ in Rio de Janeiro, Brazil; considered the largest Art Deco statue in the world.The statue is 39.6 metres (130 ft) tall, including its 9.5 meter (31 feet) pedestal, and 30 metres (98 ft) wide. It weighs 635 tons (700 short tons), and is located at the peak of the 700 metres (2,300 ft) Corcovado mountain in the Tijuca Forest National Park overlooking the city. It is one of the tallest of its kind in the world (The statue of Cristo de la Concordia in Cochabamba, Bolivia, is slightly taller). A symbol of Christianity, the statue has become an icon of Rio and Brazil.It is made of reinforced concrete and soapstone, and was constructed between 1922 and 1931.

Great Wall of China Photos

The Great Wall at Mutianyu, near Beijing

An area of the sections of the Great Wall at Jinshanling

The Great Wall in fog

Photograph of the Great Wall in 1907

Map of the whole wall constructions

The Great Wall of China is a series of stone and earthen fortifications in northern China, built originally to protect the northern borders of the Chinese Empire against intrusions by various nomadic groups. Several walls have been built since the 5th century BC that are referred to collectively as the Great Wall, which has been rebuilt and maintained from the 5th century BC through the 16th century. One of the most famous is the wall built between 220–206 BC by the first Emperor of China, Qin Shi Huang. Little of that wall remains; the majority of the existing wall was built during the Ming Dynasty.

The Great Wall stretches from Shanhaiguan in the east, to Lop Nur in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. The most comprehensive archaeological survey, using advanced technologies, has recently concluded that the entire Great Wall, with all of its branches, stretches for 8,851.8 km (5,500.3 mi). This is made up of 6,259.6 km (3,889.5 mi) sections of actual wall, 359.7 km (223.5 mi) of trenches and 2,232.5 km (1,387.2 mi) of natural defensive barriers such as hills and rivers.

Japan Flag Photos

The national flag of Japan is a white rectangular flag with a large red disk (representing the sun) in the center. This flag is officially called Nisshōki in Japanese, but is more commonly known as Hinomaru (日の丸?, "sun disc").

Chichen Itza Photos

East side of El Castillo

Map of central Chichen Itza

Chichen Itza is a large pre-Columbian archaeological site built by the Maya civilization located in the northern center of the Yucatán Peninsula, in the Yucatán state, present-day Mexico.

Chichen Itza was a major focal point in the northern Maya lowlands from the Late Classic through the Terminal Classic and into the early portion of the Early Postclassic period. The site exhibits a multitude of architectural styles, from what is called “Mexicanized” and reminiscent of styles seen in central Mexico to the Puuc style found among the Puuc Maya of the northern lowlands. The presence of central Mexican styles was once thought to have been representative of direct migration or even conquest from central Mexico, but most contemporary interpretations view the presence of these non-Maya styles more as the result of cultural diffusion.