PIX4609206: Spiral galaxy NGC 488 in Pisces - Spiral galaxy NGC 488 in Pisces - NGC 488 is a spiral galaxy located about 90 million years ago - light from Earth in the constellation Pisces. Spiral galaxy located at about 90 million light - years away in Pisces / Bridgeman Images

TEC4609294: Bastia (Haute Corsica). / Bridgeman Images

PIX4609299: Spiral galaxy M33 in the Triangle - Spiral galaxy M33 in Triangulum - M33, (NGC 598), the galaxy of the Triangle, is located about 2 million years ago - light from Earth. It belongs to the local group, just like our galaxy or Andromede galaxy. In red the star-forming regions appear. Also known as M33 or NGC 598, the Triangulum Galaxy is part of the Local Group of galaxies, which includes the Andromeda Galaxy (M31) and our galaxy, the Milky Way. M33 is over thirty thousand light - years across, and more than two million light - years away. The data in this image show the many stars within the galaxy as well as reddish star forming regions that are filled with hot hydrogen gas. Hot, massive stars which recently formed in M33 give the galaxy its bluish color. The reddish areas are nebulae in the galaxy in which stars are rapidly forming / Bridgeman Images

PIX4609326: Spiral galaxy M33 in the Triangle - Spiral galaxy M33 in Triangulum - M33, (NGC 598), the galaxy of the Triangle, is located about 2 million years ago - light from Earth. It belongs to the local group, just like our galaxy or Andromede galaxy. Also known as M33 or NGC 598, the Triangulum Galaxy is part of the Local Group of galaxies, which includes the Andromeda Galaxy (M31) and our galaxy, the Milky Way. M33 is over thirty thousand light - years across, and more than two million light - years away. Hot, massive stars which recently formed in M33 give the galaxy its bluish color. The reddish areas are nebulae in the galaxy in which stars are rapidly forming / Bridgeman Images

PIX4609396: Spiral galaxy M74 in Pisces - Spiral galaxy M74 in Pisces - Image of the spiral galaxy M74 (NGC 628). This galaxy is about 80,000 light years and is 30 million light years apart. M74 (NGC 628) is located roughly 30 million light - years away in the direction of the constellation Pisces, the Fish. It is the dominant member of a small group of about half a dozen galaxies, the M74 galaxy group. In its entirety, it is estimated that M74 is home to about 100 billion stars, making it slightly smaller than our Milky Way / Bridgeman Images

PIX4609570: Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068). This active galaxy is the typical example of a Seyfert II galaxy. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained by Siding Spring's 3.9m telescope. M77 is a Seyfert galaxy, a class of galaxy named for Karl Seyfert who first identified galaxies with emission lines superimposed on the normal radiation from their nuclei in 1943. Such galaxies are a subset of an ill - defined species generally known as 'active galaxies' whose nuclei emit radio - and X - radiation as well as visible light. The least active of the active galaxies are the Seyferts, the most active are the quasars which are mostly so distant that they can only be distinguished from stars by their spectrum.
The common feature of these galaxy types is a small, very bright nucleus thought to host a massive black hole. In Seyferts we see this black hole (or more likely its surrounding shroud of ultra - luminous gas) more or less pole - on. In other active galaxy types at different inclinations the spectrum of the nucleus changes as we see other manifestations of the black hole's influence on its surroundings. M77 is a member of a small group of galaxies at a distance of about 40 million light years / Bridgeman Images

PIX4625707: Artist's view of the planet Saturn / Bridgeman Images

PIX4626158: Astronauts on Titan - Illustration - First steps on Titan - Astronauts explore Titan's surface. Perhaps some day in the far future humans will set foot on Saturn's mysterious moon Titan, one of the most interesting worlds in the Solar System. Larger than the planet Mercury, Earth's moon, and the dwarf planet Pluto, and second only in size to Jupiter's satellite Ganymede, Titan is the only known extraterrestrial world with a dense atmosphere that realistically could be visited by humans. A visit to Titan would require a space journey of a year or more and traverse over 700 million miles. Beneath Titan's 350 miles of atmosphere, intrepid explorers would likely find a dark, forbidding landscape of rock, ice, and possibly tarry layers of hydrocarbons and lakes of liquid ethane and/or methane (AKA natural gas). The Surface temperature would be around minus 300* F, cold enough to freeze exposed human tissue within seconds. There would be no oxygen to breathe, and any water to be found would be as hard and dense as granite. Despite these harsh conditions, Titan could yet yield secrets regarding the origin of life itself as it is believed that, with the exception of the extreme cold, Titan resemble the primordial Earth at the time living organisms first appeared. In this image, Titan's first human visitors are protected by thick suits and helmets to shield them from the extreme cold - - and possibly toxic compounds such as hydrogen cyanide. They carry their own oxygen as Titan's atmosphere is primarily nitrogen with lesser amounts of argon, methane and other gases. Each explorer also carries “” head”” lights attached to their helmets to help them navigate a terrain that receives only 1/1000th the Sun's illumination on the Earth; while this means that noon on Titan would appear relatively dim, it would yet be over 300 times brighter than the Earth under a full moon / Bridgeman Images

PIX4626499: Crab Nebula seen in different wavelength - The Crab Nebula in multi wavelength: M1, the Crab Nebula, is the rest of a supernova that exploded on July 4, 1054. It is located about 6500 light years from Earth in the constellation Taurus. At the heart of this nebula is a pulsar. To obtain this photo, different observatories and telescopes combined their observations; the VLA provided the radio image (in red), the Spitzer telescope the infrared image (in yellow), the Hubble telescope for the visible part (here in green), XMM-Newton the ultraviolet image (in blue) and the Chandra telescope for X-ray data (purple). The pulsar is the bright spot in the center of the image. The unusual image was produced by combining data from telescopes spanning almost the entire electromagnetic spectrum, from radio waves to X-rays. The Karl G. Jansky Very Large Array (VLA) provided information about the nebula gathered in the radio regime (colored in red). Nasa's Spitzer Space Telescope took images in the infrared (yellow). The NASA/ESA Hubble Space Telescope provided the images made in optical wavelengths (colored in green). ESA's XMM-Newton telescope observed the Crab Nebula in the ultraviolet (blue) and Nasa's Chandra X-ray Observatory provided the data for X-ray radiation (purple). The Crab Nebula, located 6500 light-years from Earth in the constellation of Taurus, is the result of a supernova explosion which was observed by Chinese and other astronomers in 1054. At its centre is a pulsar: a super-dense neutron star, spinning once every 33 milliseconds, shooting out rotating light-like beams of radio waves and visible light. Surrounding the pulsar lies a mix of material; some of it was originally expelled from the star before it went supernova, and the rest was ejected during the explosion itself. Fast-moving winds of particles fly off from the neutron star, energising the dust and gas around it. / Bridgeman Images

TEC4609677: Development in San Diego (United States). / Bridgeman Images

TEC4609685: Development in San Diego (United States). / Bridgeman Images

TEC4609806: Subdivision in Hyeres (Var). / Bridgeman Images

TEC4609825: Subdivision in Hyeres (Var). / Bridgeman Images

PIX4609836: Barree spiral galaxy NGC 1365 in the Furnace - Barred spiral galaxy NGC 1365 in Fornax - NGC 1365 is a barree spiral galaxy that extends over 200,000 years - light. Located 60 million years ago - light, it belongs to the cluster of galaxies of the Furnace. Image obtained in 1999 by the European telescope Antu of the VLT in Chile. NGC 1365 is one of the most prominent “” barred”” galaxies in the sky. It is a supergiant galaxy with a diameter of about 200,000 light - years, seen in the direction of the southern constellation Fornax. It is a major member of the Fornax Cluster of Galaxies. The distance is about 60 million light - years. A massive straight bar runs through this galaxy and contains the nucleus at the centre. It consists mostly of older stars that give a reddish colour to the bar.The gravitational perturbation from the bar causes interstellar gas and dust clouds to form a pair of spiral arms that extend from the ends of the bar. Young luminous hot stars, born out of the interstellar clouds, give these arms a prominent appearance and a blue colour. The bar and spiral pattern rotates clockwise, as seen from us. One full turn takes about 350 million years. Image combined from three exposures with the FORS1 multi - mode instrument at VLT UT1, ANTU / Bridgeman Images

TEC4609888: Subdivision in Hyeres (Var). / Bridgeman Images

PIX4610385: Spiral galaxy M81 infrared view - Spiral galaxy M81 seen in infrared - View obtained by Spitzer space telescope in different wavelengths. In infrared, Spitzer sees dust rather than stars, thus improving our understanding of star formation. The M81 spiral galaxy is located 12 million light years away from Earth. Its arms are home to star-forming regions while its core is surrounded by much older yellow stars. Located in the northern constellation of Ursa Major (which also includes the Big Dipper), this galaxy is easily visible through binoculars or a small telescope. M81 is located at a distance of 12 million light - years. These infrared images were obtained by Spitzer's infrared array camera. At these wavelengths, Spitzer sees the dust, rather than the stars, within the disc of silicates and carbonaceous grains. It is well - mixed with gas, which is best seen at radio wavelengths, to form the essential ingredients for future star formation / Bridgeman Images

TEC4592988: Propaganda poster located in the outskirts of Havana, Cuba. / Bridgeman Images

TEC4593183: Plaza Vieja in Havana (Cuba). / Bridgeman Images

PIX4593209: Persee Constellation - Constellation of Perseus - At the top of the picture, the double cluster of Persee, at the bottom the nebula NGC 1499. Top right is the double cluster, bottom left is the nebula NGC 1499 / Bridgeman Images

PIX4593307: Persee Constellation - Constellation of Perseus - Persee Constellation extracted from the Uranographia of Hevelius. Recolorised image. Map showing the constellation of Perseus with its mythological form from “” Uranographia”” star atlas by Hevelius (1690). Recolored Image / Bridgeman Images

PIX4593321: Constellations of the Little Horse, Dauphin, Fleche and Petite Fox - Constellation of Equuleus and Vulpecula - At the top right, the constellation of the Little Fox, below, the Fleche, on the left, the Dolphin; at the bottom left, the Little Horse. Equuleus (the Little Horse or colt) is a small and undistinguished constellation located about 10 degrees north of the celestial equator. It is the second smallest constellation in the sky: only Crux is smaller. It contains no bright stars, so, unlike Crux, it is difficult to find, though Delphinus is a useful guide. There is little of astronomical interest here that is accessible to small telescopes. Vulpecula, the Fox, first appears in Johannes Hevelius' atlas of 1690 and was originally called Vulpecula Cum Anser, the fox with goose, but the bird has flown and the fox is hardly obvious. The constellation crosses part of the northern Milky Way and lies just south of Cygnus. The main stars of Sagitta are also well seen here / Bridgeman Images

PIX4593350: Constellation of the Little Bear - Constellation of Ursa Minor - At the top of the picture, the polar star. Ursa Minor (the Little Bear) is intimately linked to Polaris, the North Star which may be found at the end of the trail of stars that look like the Little Dipper / Bridgeman Images

PIX4593394: Constellation of the Little Bear - Constellation of Ursa Minor - Map of the constellation of the Little Bear with its main Celestial objects. The Great Bear is indicated for the scale. Map showing the constellation of Ursa Minor with its main celestial objects. Constellation of Big Dipper is shown at scale / Bridgeman Images

PIX4626743: A plane passes by the Sun - A plane in front of the Sun - A plane passes by the solar disk. Image obtained by an astronomical bezel ed 102/1320 and an eos 60d cannon. A plane is silhouetted in front of the Sun / Bridgeman Images

ITR4593507: Statue of the Church of Ravieres in the Yonne. Photography 15/11/03. / Bridgeman Images

PIX4626948: Le Soleil 12/04/2003 seen by SOHO - Le Soleil 12/04/2003 seen by SOHO - Le Soleil 12/04/2003 seen by SOHO in the band centree on 284 A, the ray emailed by the ion Fe X / Bridgeman Images

TEC4593642: Pont Alexandre III (1886-1900), Paris 8th arrondissement. Tsar Alexander III of Russia (1845-1894) laid the first stone of the bridge in 1886, which was to be completed for the 1900 World Exhibition. One of the most beautiful bridges in Paris has a single-flight metal structure. / Bridgeman Images

PIX4627109: The Moon passes in front of the Sun - 25 - 02 - 2007 - Transit of the Moon in front of the Sun observed by STEREO - B satellite on 25 February 2007. The Sun is seen in different wavelengths of the ultraviolet / Bridgeman Images

OMG4627167: Keizersgracht in Amsterdam (Netherlands). Photographed 05/04/07. / Bridgeman Images

OMG4627184: Westelijke eilanden a Priseneiland, Amsterdam (Netherlands). / Bridgeman Images

OMG4627236: Tramway in Amsterdam (Netherlands). / Bridgeman Images

OMG4627283: Amsterdam Central Station (Netherlands). Construction 1889, architects Cuypers and Van Gendt. Photography 05/04/07. / Bridgeman Images

PIX4627341: Total Eclipse of Sun 11 - 07 - 1991 - Total Eclipse of Sun 11 - 07 - 199 / Bridgeman Images

PIX4610471: Spiral Galaxy NGC 3079 in the Great Bear - Spiral galaxy NGC 3079 - NGC 3079 is a spiral galaxy distant about 50 million years - light from Earth. His disc measures about 70,000 years - light. This false-colored image obtained by the Hubble Space Telescope in 1998 shows that a huge gas bubble escapes from the galaxy. This bubble rises more than 3500 years ago - light above the disk of the galaxy. It is a wind from hot stars and blends with very hot gas from supernovae explosions that would cause this bubble. The picture shows the bubble in the center of the NGC 3079 galaxy's disk. The structure is more than 3,000 light - years wide and rises 3,500 light - years above the galaxy's disk. Astronomers suspect that the bubble is being blown by “” winds”” (high - speed streams of particles) released during a burst of star formation. Eventually, this gas will rain down upon the galaxy's disk where it may collide with gas clouds, compress them, and form a new generation of stars. The two white dots just above the bubble are probably stars in the galaxy. According to theoretical models, the bubble formed when ongoing winds from hot stars mixed with small bubbles of very hot gas from supernova explosions. NGC 3079 is 50 million light - years from Earth in the constellation Ursa Major. The colors in this image accentuate important details in the bubble. Glowing gas is red and starlight is blue/green. Hubble's Wide Field and Planetary Camera 2 snapped this picture in 1998 / Bridgeman Images

LBY4593674: The Pont Alexandre IIIa Paris 8th arrondissement. Tsar Alexander III (1845-1894) laid the first stone of the bridge in 1886, which was to be completed for the 1900 World Exhibition. One of the most beautiful bridges in Paris has a metal structure of a single vole.Photography10/05/06. / Bridgeman Images

PIX4593894: Scorpio Constellation - Constellation of Scorpius - The star Antares with its orange eclate dominates the constellation Scorpio. Starry sky with the constellation of Scorpius with the reddish star Antares / Bridgeman Images