Odiham Castle is a ruined castle situated near Odiham in Hampshire, England. It is one of only three fortresses built by King John during his reign. Completed between 1207 and 1214, it fell to a French siege in 1216 but was later rebuilt. Used to host Parliament and, later, as a prison in the 13th and 14th centuries, by 1605 Odiham was described as a ruin. Its only visible remains today are part of the octagonal keep and outlying earthworks.Photograph: BabelStone
Saint Joseph and the Christ Child, an oil painting on canvas completed in 1640 by the Italian artist Guido Reni (1575–1642). Born in Bologna into a family of musicians, Reni studied under Denis Calvaert and Ludovico Carracci. He worked extensively in Rome and Naples before returning to Bologna after 1614. Reni worked with various mediums, including canvas and frescoes, and produced multiple etchings. Though the themes he depicted were mostly biblical and mythological, he also painted several portraits.Painting: Guido Reni
Capricornus is a constellation commonly represented in the form of a sea-goat, a mythical creature that is half goat, half fish. One of the 88 modern constellations, Capricornus was also one of the 48 constellations listed by the 2nd century astronomer Ptolemy. The constellation is located in an area of sky called the Sea or the Water, consisting of many water-related constellations such as Aquarius, Pisces and Eridanus. It is the smallest constellation in the zodiac.
Inspired by the courtship dance of the bird of paradise, the dance takes the form of a mating ritual. Two women dancers don Pandji-style headdresses with feathers stuck in them, as well as long flowing scarves or skirts with a pink stripe. The skirts serve as the tails of the birds of paradise, and when held their fluttering gives the impression of wings in flight. Shown here is a lone Cendrawasih dancer with her scarf hanging.
The common clam worm (Alitta succinea) is a widely distributed species of marine polychaete worm. The photograph shows an epitoke specimen, the worm having turned into a form capable of reproduction. After releasing its sperm or eggs, the animal will die.Photograph: Hans Hillewaert
A zoom sequence illustrating the set of complex numbers termed the Mandelbrot set. Images of the set, which was defined and named by Adrien Douady in tribute to the mathematician Benoit Mandelbrot, may be created by sampling the complex numbers and determining whether the result of iterating for each sample point goes to infinity. Images exhibit an elaborate and infinitely complicated boundary that reveals progressively ever-finer recursive detail at increasing magnifications. Consequently, the Mandelbrot set has become popular outside mathematics both for its aesthetic appeal and as an example of a complex structure arising from the application of simple rules.Animation: Simpsons contributor
A portrait of a red-legged seriema (Cariama cristata), a mostly predatory terrestrial bird in the seriema family (Cariamidae). Found in South America, its range covers grasslands from Brazil to Uruguay and northern Argentina. This bird is also known as the crested seriema for the soft feathers that emerge from the base of the bill to form a fan-shaped crest.Photograph: Charles J. Sharp
A watercolor illustration by John Bauer (1882–1918) titled "Still, Tuvstarr sits and gazes down into the water", which accompanied Helge Kjellin's fairy tale "The Tale of the Moose Hop and the Little Princess Cotton Grass" in the 1913 edition of Among Gnomes and Trolls. In this scene, Tuvstarr looks for her lost heart in a tarn, symbolizing innocence lost.
The Dome of the Rock is an Islamic shrine located on the Temple Mount in the Old City of Jerusalem. One of the oldest extant works of Islamic architecture, the Dome of the Rock was initially completed in 691 CE at the order of Umayyad CaliphAbd al-Malik during the Second Fitna, built on the site of the Roman temple of Jupiter Capitolinus, which had in turn been built on the site of Herod's Temple, destroyed during the Roman Siege of Jerusalem in 70 CE. After the original dome collapsed in 1015, it was rebuilt in 1022–23, patterned after nearby Byzantine churches and palaces. The site has great significance for Muslims owing to traditions connecting it to the creation of the world and to the belief that the Prophet Muhammad's Night Journey to heaven started from the rock at the center of the structure. The rock also bears great significance for Jews as the site of Abraham's attempted sacrifice of his son.Photograph: Andrew Shiva