FLO4571240: King Henry II of Navarre. Henri d'Albert, King of Navarre 1505-1555, reign of King Henri II of France. He holds a daisy or daisite. Handcoloured lithograph by Leopold Massard after a miniature in Roger de Gagnieres' portfolio from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852., Massard, Leopold (1812-1889) / Bridgeman Images

FLO4571244: Catherine de Medici, queen of France, reign of King Henry II of France. Handcoloured lithograph by Leopold Massard after a portrait in Roger de Gaignieres' cabinet (portfolio VIII 95) from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852., Massard, Leopold (1812-1889) / Bridgeman Images

FLO4571250: Claude de Lorraine, first Duke of Guise. Illustration drawn and lithographed by Leopold Massard after a portrait in Roger de Gaignieres' gallery portfolio VIII 102 from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852., Massard, Leopold (1812-1889) / Bridgeman Images

PIX4571284: La comete Siding Spring - september 2014 - Comet Siding Spring - september 2014 - La comete C/2013 A1 Siding Spring near the globular cluster 47 Toucan, seen September 1, 2014. Comet Siding Spring C/2013 A1 passing 47 Tucanae seen on september 1st 2014 / Bridgeman Images

PIX4573744: Artist view of the exoplanete Gliese 581c. - Artwork of the giant terrestrial planet Gliese 581c / Bridgeman Images

PIX4573765: Planets and galaxies - Artist's view / Bridgeman Images

FLO4573792: Metamorphosis of honey bees, honeycomb, queens, drones and chain of worker bees. Handcoloured copperplate engraving from Friedrich Johann Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1792. / Bridgeman Images

PIX4573814: Planetary system around a double star.Artist view. - Artwork of extrasolar planets around a binary system / Bridgeman Images

PIX4573833: Artist's view of an exoplanet of a terrestrial type accompanied by its satellite. - Artwork of an earth - like extrasolar planet with its moon in background / Bridgeman Images

PIX4573836: Artist's view of the exoplanet OGLE - 05 - 390L b. - Artist's view of the exoplanet OGLE - 05 - 390L b, the first extrasolar planet of earth type discovered. Located in the constellation of Scorpio, this planet, made of rock and ice, is outside the habitable zone of its star, a red dwarf star / Bridgeman Images

PIX4573841: Artist's view of an exoplanet near a giant red star - Artist's view of an exoplanet close to a giant red star, a star at the end of life, which before becoming a white dwarf, will inflate and burn the planets around it. Artwork of a planet too close from a red giant star, heated by a sun - like star in final evolution stage expanding dramatically / Bridgeman Images

PIX4573851: Life forms on the surface of Gliese 581 c - Flying fauna over Gliese 581 c - Artist's view of the exoplanet Gliese 581c housing an alien life form. Gliese 581c, with a radius of 1.5 times that of the Earth, is the first exoplanet gathering the necessary elements to imagine the existence of a possible extra-terrestrial life. From its surface, its star, about 100 times less bright than our Sun, must be large in the sky because of its proximity to the planet. Gliese 581 b, another planet in this system, passes past this star. Flying life forms grace the crimson skies of the potentially earth - like extrasolar planet Gliese 581 v. The red dwarf star Gliese 581 rests on the horizon, presiding over a liquid water sea. Eclipsing the red dwarf is Gliese 581 b, a sister planet in the same system with a mass 17 times that of the Earth. While the existence of all three bodies has been confirmed, it is not known if Gliese 581 c has all the necessary ingredients to support life as we know it / Bridgeman Images

FLO4573868: Vipere des sable ou du desert et vipere aspic - Sahara sand viper, Cerastes vipera 1, and black asp, Vipera aspis atra, vulnerable 2. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1795. / Bridgeman Images

PIX4573877: Surface of an exoplanet - Artist's view. - Artist's view of the surface of an exoplanet with strong climatic contrasts / Bridgeman Images

FLO4573921: Anise or aniseed (green anise), Pimpinella anisum 1, and cumin, Cuminum cyminum 2. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1795. / Bridgeman Images

PIX4573941: Surface of an uninhabitable exoplanet - Exoplanet too hot for life. Artwork - Artist's view of the surface of a planet where extreme temperatures make life impossible. There are likely earthlike planets that miss being hospitable to life because they are a little too close to their host sun (s) / Bridgeman Images

FLO4573995: Mountain hare, Lepus timidus 1, mythical jackalope or horned hare, Lepus temperamentalus 2, northern white hare, Lepus timidus 3, snowshoe hare, Lepus americanus 4, rabbit, Lepus cuniculus 5.6, and Angora rabbit, Lepus cuniculus variety 7. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images

PIX4574001: Exoplanete Gliese 667 Cb - The system Gliese 667 (Artist's impression) - Gliese 667 Cb is an exoplanet orbiting the star Gliese 667 C, located about 23 years ago - light from Earth in the constellation of the scorpion. This super Earth was detected using the HARPS program at the La Silla Observatory in Chile in October 2009. On 19 October 2009, the team who built the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6 - metre telescope, reported on the incredible discovery of some 32 new exoplanets, cementing Harps's position as the world's foremost exoplanet hunter. One of these is surrounding the star Gliese 667 C, which belongs to a triple system. The 6 Earth - mass exoplanet circulates around its low - mass host star at a distance equal to only 1/20th of the Earth - Sun distance. The host star is a companion to two other low - mass stars, which are seen here in the distance / Bridgeman Images

FLO4574014: Common fly, Musca domestica 1, head of fly 2, magnified 3, proboscis 4,5, cornea 6, magnified 7. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images

PIX4574018: A supergeant red star will swallow a planet - Vue d'artist / Bridgeman Images

FLO4574019: Siberian musk deer, Moschus moschiferus (male 1, female 2), Napu musk deer, Tragulus javanicus Moschus indicus 3, and royal antelope, Neotragus pygmaeus 4. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images

FLO4574049: American sweetgum tree, Liquidambar styraciflua 1, and putty tree, Pistacia lentiscus 2. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1795. / Bridgeman Images

FLO4572085: King Louis XV, King of France and Navarre, in his coronation robes and wearing the crown of Charlemagne 1722. Handcoloured lithograph after a portrait in Roger de Gaignieres' portfolio from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

FLO4572117: Victor-Marie, Duke of Estrees, Marshal of France, 1660-1737. Handcoloured lithograph after a portrait by Bigaud from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

PIX4572123: Hypergeante Star HR 5171 - Illustration: This artist view shows the yellow hypergeant star HR 5171. It is a very rare star of which only a dozen people our galaxy. Its dimensions are more than 1300 times greater than those of the Sun, making it one of the ten largest stars discovered to date. Observations have shown that it is actually a double star, whose companion is in direct contact with the main star. This artist's impression shows the yellow hypergiant star HR 5171. This is a very rare type of star with only a dozen known in our galaxy. Its size is over 1300 times that of our Sun - one of the largest ten stars found so far. Observations with Eso's Very Large Telescope Interferometer have shown that it is actually a double star, with the companion in contact with the main star / Bridgeman Images

FLO4572137: Jeanne Antoinette Poisson, Madame de Pompadour, Marquise de Pompadour, mistress of King Louis XV, 1721-1764. Handcoloured lithograph after an original portrait in Versailles from Le Bibliophile Jacob aka Paul Lacroix's Historical Costumes of France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

FLO4572178: Louis, 3rd Duke of Aumont, Marquis de Villequier, 1667-1723. In ceremonial robes for the coronation of King Louis XV. Handcoloured lithograph after a portrait in Roger de Gaignieres' portfolios from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

FLO4572184: English women's fashions of 1750. Handcoloured lithograph after a contemporary print from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

FLO4572210: Marguerite de Lussan, writer and historical novelist, 1682-1758. Handcoloured lithograph after an engraved portrait from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

FLO4572216: Louis II du Bouchet, Marquis de Sourches, Count of Montsoreau, 1711-1788. Handcoloured lithograph by C. Breton after a painting of the coronation of Louis XV from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

PIX4572242: Star field in the halo of the Andromede galaxy - Deep field image in the halo of Andromeda galaxy - Deep field in the halo of the Andromede galaxy obtained by the Hubble space telescope in 2003. 300,000 stars as well as thousands of background galaxies are visible. Astronomers using Nasa's Hubble Space Telescope (HST) have reliably measured the age of the spherical halo of stars surrounding the neighboring Andromeda galaxy (M31). To their surprise, they have discovered that approximately one - third of the stars in Andromeda's halo formed only 6 to 8 billion years ago. That's a far cry from the 11 - to - 13 billion - year age of the stars in the Milky Way's halo. Why the difference in halo ages? Apparently, M31 must have gone through a major “” corporate merger”” with another large galaxy, or a series of mergers with smaller galaxies, billions of years ago. Astronomers cannot yet tell whether this was one tumultuous event or a more continual acquisition of smaller galaxies. The newly discovered younger stars in Andromeda's halo are richer in heavier elements than the stars in our Milky Way's halo, or in most of the small dwarf galaxies that surround the Milky Way. Indeed the level of chemical enrichment seen in these younger stars is characteristic of relatively massive galaxies, containing at least a billion stars. This suggests three possibilities: (1) Collisions destroyed the young disk of M31 and dispersed many of its stars into the halo; (2) a single collision destroyed a relatively massive invading galaxy and dispersed its stars and some of Andromeda's disk stars into the halo; and/or (3) many stars formed during the collision itself. Astronomers say it will take more detailed observations to unravel the acquisition history of these early cataclysmic events. Located only 2.5 million light - years away, the magnificent Andromeda galaxy, visible as a naked - eye spindle of light in the autumn sky has long been considered a near twin to our / Bridgeman Images

PIX4572357: Star HD 209458 in Pegase - Star HD 209458 in Pegasus - This star, located in the center of the image, is about 150 years from Earth and is observable with a pair of binoculars. In orbit around this star, invisible in this image, we discovered a giant planet called Osiris (HD 209458b). This extrasolar planet of a new type is a hot Jupiter, a massive planet very close to its star. The star located in the center of this image is called HD 209458. It is similar to our Sun and lies 150 light - years from Earth. It is visible with binoculars as a seventh magnitude star in the constellation of Pegasus. In orbit around this star (but invisible on this picture) is an exoplanet named Osiris (HD 209458b). It is a hot jupiter, a giant planet orbiting very close to its star / Bridgeman Images

PIX4572367: Stars Field in the Peacock - Random star field in Pavo, near NGC 6477 - Towards the middle of the picture, the cluster of galaxies IC 4765. Image obtained by Schmidt UK 1.2m Telescope from Siding Spring The brightest star visible here is the magnitude 4.2 variable blue star lambda Pav, visible to the unaided eye in a dark sky, while the scattering of stars in the lower part of the picture are about a magnitude fainter and would be hard to see in all but the darkest conditions. Near middle of the image, the cluster of galaxies IC 4765 / Bridgeman Images

PIX4572374: Comparison of Sun Sizes, Sirius and Rigel - Size comparison: Sun, Sirius and Rigel - The Sun (yellow star at the top), and the star Sirius A, (the brightest star in the sky) compared to the huge star Rigel, a supergeant blue star in the constellation of Orion. The brightest star in Earth's sky, Sirius, is seen here next to our Sun and the blue giant Rigel. Sirius has a small companion star, Sirius B. Rigel forms the left foot in the constellation Orion, and its light is equal to 40,000 suns / Bridgeman Images

FLO4572396: English women's fashions of 1786 (bourgeois). Handcoloured lithograph after an illustration in the Cabinet des modes from Le Bibliophile Jacob aka Paul Lacroix's Costumes Historique de la France (Historical Costumes of France), Administration de Librairie, Paris, 1852. / Bridgeman Images

PIX4572398: Artist's view of the star Rigel - The star Rigel. Artwork - Rigel is a blue supergiant, 55,000 times brighter than the Sun and about 80 times that of the Sun. It is located in the constellation Orion. Rigel is a blue supergiant star located in the Orion constellation / Bridgeman Images