TEC4622737: Henri IV high school in Paris. / Bridgeman Images

FLO4622881: King Henry VI (kneeling in prayer) (Henry VI) and his queen, Margaret of Anjou, with a broker. Handcoloured copperplate engraving by Giarre and Stanghi from Giulio Ferrario's Costumes Ancient and Modern of the Peoples of the World, 1847. / Bridgeman Images

FLO4622910: Anglo-Saxon warrior chief in tunic and conical helmet 1, Anglo-Danish soldiers in chainmail armour 2, the knight Sir Hugh Bardulf in chainmail armour 13th century 3, and a Scottish knight with coat of arms 4. Handcoloured copperplate engraving by Giarre and Stanghi from Giulio Ferrario's Costumes Ancient and Modern of the Peoples of the World, 1847. / Bridgeman Images

PIX4623359: Planetary nebula M57 (NGC 6720) in Lyra - M57 (NGC 6720) planetary nebula in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Composite image obtained by different telescopes. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Planetary nebula are shells of gas shed by stars late in their life cycles after using up all of their nuclear fuel. The star then ejects a significant portion of its mass in a gaseous shell, which is illuminated by its extremely hot central star, which is just the core left from the original star. The star at the center of the Ring nebula has a surface temperature of 216,000 degrees Farenheit or 120,000 degrees Celsius. Our own star, the Sun, is expected to undergo the same process in a couple of billion years. Planetary nebulae do not last long at all in cosmic terms, the shell of gas expands and diffuse, becoming invisible, and the star turns into a white dwarf. Composite image from three data sources: HST, LBT, Subaru / Bridgeman Images

PIX4623390: Planetary nebula NGC 6826 in Swan - Planetary nebula NGC 6826 in Cygnus - Planetary nebula NGC 6826 is located about 2000 years - light from Earth in the constellation Swan. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope on January 27, 1996. NGC 6826's eye - like appearance is marred by two sets of blood - red “” fliers”” that lie horizontally across the image. The surrounding faint green “” white”” of the eye is believed to be gas that made up almost half of the star's mass for most of its life. The hot remnant star (in the center of the green oval) drives a fast wind into older material, forming a hot interior bubble which pushes the older gas ahead of it to form a bright rim. (The star is one of the brightest stars in any planetary.) NGC 6826 is 2,200 light - years away in the constellation Cygnus. The Hubble telescope observation was taken Jan. 27, 1996 with the Wide Field and Planetary Camera / Bridgeman Images

PIX4623521: Planetary nebula NGC 7008 in the Cygn / Bridgeman Images

PIX4623677: Planetary nebula IC 418 dans le Lievre/HST - IC 418: The “” Spirograph” Nebula Glowing like a multi - faceted jewel, the planetary nebula IC 418 lies about 2,000 light - years from Earth in the direction of the constellation Lepus. This photograph is from Nasa's Hubble Space Telescope, obtained with the Wide Field Planetary Camera 2. A planetary nebula represents the final stage in the evolution of a star similar to our Sun. The star at the center of IC 418 was a red giant a few thousand years ago, but then ejected its outer layers into space to form the nebula, which has now expanded to a diameter of about 0.1 light - year. The stellar remnant at the center is the hot core of the red giant, from which ultraviolet radiation floods out into the surrounding gas, causing it to fluoresce. Over the next several thousand years, the nebula will gradually disperse into space, and then the star will cool and fade away for billions of years as a white dwarf. Our own Sun is expected to undergo a similar fate, but fortunately this will not occur until some 5 billion years from now. The Hubble image of IC 418 is shown in a false - color representation, based on Wide Field Planetary Camera 2 exposures taken in February and September, 1999 through filters that isolate light from various chemical elements. Red shows emission from ionized nitrogen (the coolest gas in the nebula, located furthest from the hot nucleus), green shows emission from hydrogen, and blue traces the emission from ionized oxygen (the hottest gas, closest to the central star) / Bridgeman Images

FLO4623504: King and knights in armour on horseback at a medieval tournament. Handcoloured copperplate engraving by Verico after A. Monticelli from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, 1844. / Bridgeman Images

PIX4623669: Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - The planetary nebula of Helice, located in Aquarius, is one of the closest to Earth (about 690 years - light) and is also one of the most extended; its apparent diameter is about half of the full moon. Image made with the 1.5m Danish telescope of La Silla in Chile in 2009. Helix is our closest planetary nebula at about 690 light years distance. Image taken with the ESO/Danish 1.5m telescope at La Silla observatory in Chile / Bridgeman Images

FLO4623689: Hindu gods including Trimurti, Shiva, Vishnu and Brahma. Handcoloured copperplate drawn and engraved by Andrea Bernieri from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, Florence, Italy, 1844. / Bridgeman Images

PIX4622956: Planetary nebula NGC 2440 in the stern - View of planetary nebula NGC 2440 in the stern obtained by the Hubble space telescope on 6 February 2007. The star in the center of the image is a white dwarf, a star at the end of life that expels the outer layers of its material all around it. Our Sun could have a similar fate in five billion years. This star is one of the hottest in history; its temperature is 200,000 degres Celsius. NGC 2440 is located about 4000 years from Earth / Bridgeman Images

PIX4622959: Planetary nebula NGC 2818 - Planetary nebula NGC 2818 in Pyxis - The open cluster NGC 2818A in the southern constellation of the Compsole is distinguished by the fact that most of its bright stars have already become supernovae; this indicates that this cluster must be very old, perhaps a billion years. It has a planetary nebula, NGC 2818, photographed here by the Hubble space telescope in November 2008. A planetary nebula is an end-of-life star. NGC 2818 (also called PLN 261+8.1) is located about 10,000 light years from Earth. The unique planetary nebula NGC 2818 is nested inside the open star cluster NGC 2818A. Both the cluster and the nebula reside over 10,000 light - years away, in the southern constellation Pyxis (the Compasss). NGC 2818 is one of very few planetary nebulae in our galaxy located within an open cluster. Open clusters, in general, are loosely bound and they disperse over hundreds of millions of years. Stars that form planetary nebulae typically live for billions of years. Hence, it is rare that an open cluster survives long enough for one of its members to form a planetary nebula. This open cluster is particularly ancient, estimated to be nearly one billion years old. The spectacular structure of NGC 2818 (also known as PLN 261+8.1) contains the outer layers of a sun - like star that were sent off into interstellar space during the star's final stages of life. These glowing gaseous shrouds were shed by the star after it ran out of fuel to sustain the nuclear reactions in its core. NGC 2818 has a complex shape that is difficult to interpret. However, because of its location within the cluster, astronomers have access to information about the nebula, such as its age and distance, that might not otherwise be known. Planetary nebulae fade away gradually over tens of thousands of years. The hot, remnant stellar core of NGC 2818 will eventually cool off for billions of years as a white dwarf. Our / Bridgeman Images

FLO4623042: Greenwich Hospital on the River Thames, London, 18th century. Handcoloured copperplate engraving by Verico from Giulio Ferrario's Costumes Ancient and Modern of the Peoples of the World, 1847. / Bridgeman Images

ITR4623067: One of the three greenhouses of the garden of plants in Paris 75005. / Bridgeman Images

FLO4623166: Bard in distinctive sky-blue robes with 12-string harp, Briton in the Roman fashion of multicolored cape and red tunic, and two female Britons in tunic and skirts. Handcoloured copperplate engraving by Verico from Giulio Ferrario's Costumes Ancient and Modern of the Peoples of the World, 1847. / Bridgeman Images

FLO4623191: Dome-shaped house of the Sami people, Lapland. Handcoloured copperplate engraving by Giarre from Giulio Ferrario's Costumes Ancient and Modern of the Peoples of the World, 1847. / Bridgeman Images

PIX4623194: Planetary nebula NGC 6369 in Ophiuchus/HST - NGC 6369 is known to amateur astronomers as the “” Little Ghost Nebula,”” because it appears as a small, ghostly cloud surrounding the faint, dying central star. NGC 6369 lies in the direction of the constellation Ophiuchus, at a distance estimated to be between about 2,000 and 5,000 light - years from Earth. When a star with a mass similar to that of our own Sun nears the end of its lifetime, it expands in size to become a red giant. The red - giant stage ends when the star expels its outer layers into space, producing a faintly glowing nebula. Astronomers call such an object a planetary nebula, because its round shape resembles that of a planet when viewed with a small telescope. The Hubble photograph of NGC 6369, captured with the Wide Field Planetary Camera 2 (WFPC2) in February 2002, reveals remarkable details of the ejection process that are not visible from ground - based telescopes because of the blurring produced by the Earth's atmosphere. The remnant stellar core in the center is now sending out a flood of ultraviolet (UV) light into the surrounding gas. The prominent blue - green ring, nearly a light - year in diameter, marks the location where the energetic UV light has stripped electrons off of atoms in the gas. This process is called ionization. In the redder gas at larger distances from the star, where the UV light is less intense, the ionization process is less advanced. Even farther outside the main body of the nebula, one can see fainter wisps of gas that were lost from the star at the beginning of the ejection process. The color image has been produced by combining WFPC2 pictures taken through filters that isolate light emitted by three different chemical elements with different degrees of ionization. The doughnut - shaped blue - green ring represents light from ionized oxygen atoms that have lost two electrons (blue) and from hydrogen atoms that have lost their single electrons (green). Red marks / Bridgeman Images

ITR4623221: One of the three greenhouses of the garden of plants in Paris 75005. / Bridgeman Images

FLO4623313: Jousting helm 1, horned helmet of the Earl of Dammartin 2, winged helm of the Constable of Clisson 3, royal helm 4 and chainmail hood and cap 5, and flat-headed helms circa 1230 during the reign of King Philip II, 6,7. Handcoloured copperplate engraving by Verico from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, 1844. / Bridgeman Images

PIX4623825: Planetary Nebula Abell 24 in Little Chie / Bridgeman Images

TEC4623874: The Musee Galliera in Paris. Photography 1998. / Bridgeman Images

FLO4623877: Tomb of Hyder Ali Khan, Sultan of Mysore, India. Handcoloured copperplate drawn and engraved by Andrea Bernieri from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, Florence, Italy, 1844. / Bridgeman Images

TEC4623973: The Palais de Tokyo from New York Avenue in Paris. Architects: Andre Aubert, Paul Viard, Jean Claude Dondel and Marcel Dastugue, 1937. Built for the 1937 World Exhibition, the International Exhibition of Arts and Techniques in the Modern City. The Palais de Tokyo is a small part of the Luxembourg Museum and the Peure Palais too narrow to accommodate municipal collections. It owes its name to the Tokyo wharf, now New York Avenue. / Bridgeman Images

TEC4624021: The Palais de Tokyo has Paris from Avenue de New York, Paris 16th. Construction 1937, architects: Andre Aubert, Paul Viard, Jean Claude Dondel and Marcel Dastugue. Built for the 1937 World Exposition, it now houses in the east wing the Museum of Modern Art of the City of Paris. France, an immense allegory of Antoine Bourdelle, dominates the court in all its verticalite. Built in 1948 by the Free French Association. / Bridgeman Images

LRI4624064: Portrait on foot of Mary Therese of Austria (1638-1683), Queen of France Painting of Charles Beaubrun's Atelier (1604-1692) 17th century Florence, Galleria Palatina. — Portrait of Maria Theresa of Spain (1638-1683), Queen of France. Painting by the studio of Charles Beaubrun (1604-1692) ,17th century, Galleria Palatina, Florence, Italy, Beaubrun, Henri (1603-77) (circle of) / Bridgeman Images

TEC4623812: The Palais de Chaillot in Paris. Construction 1937, architects Jacques Carlu (1890-1976), Louis Hippolyte Boileau (1878-1948) and Leon Azema (1888-1978). / Bridgeman Images

FLO4623819: South-east view of the Kailasa temple, Ellora rock cut temple caves, India. Handcoloured copperplate drawn and engraved by Andrea Bernieri from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, Florence, Italy, 1844. / Bridgeman Images

TEC4623826: Le Palais de Chaillot, Paris 16th. Construction 1937, architects Jacques Carlu (1890-1976), Louis Hippolyte Boileau (1878-1948) and Leon Azema (1888-1978). / Bridgeman Images

FLO4623830: Pagoda of Brihadeeswarar Temple or Peruvudaiyar Kovil, Thanjavur, India. Handcoloured copperplate drawn and engraved by Andrea Bernieri from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, Florence, Italy, 1844. / Bridgeman Images

FLO4623835: Interior of the Thirumalai Nayak Palace, ancient residence of Raja Raja Thirumalai sowri at Madurai, India. Handcoloured copperplate drawn and engraved by Andrea Bernieri from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, Florence, Italy, 1844. / Bridgeman Images

PIX4623891: Planetary nebula PK164+31.1 in Lyn / Bridgeman Images

LRI4623900: Medici dogs, with a cat and a rabbit from the Italian school, 15th-16th century (painting), Italian School, (15th century) / Bridgeman Images

PIX4623905: Planetary nebula PK164+31.1 in Lynx - Planetary nebula PKS164+31.1 in Lyn / Bridgeman Images

TEC4623997: Passy cemetery in Paris. / Bridgeman Images

FLO4624065: Stupa of Shwemawdaw Pagoda, Bago, Myanmar (Shoemadoo, the great temple at Pegue, Burma). Adapted from Michael Symes' An Account of an Embassy in the Kingdom of Ava. Handcoloured copperplate drawn and engraved by Andrea Bernieri from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, Florence, Italy, 1844. / Bridgeman Images

FLO4623493: Knights in armour on horseback at a medieval tournament. Handcoloured copperplate engraving by Verico from Giulio Ferrario's Ancient and Modern Costumes of all the Peoples of the World, 1844. / Bridgeman Images