PIX4613733: Elliptical Galaxy ESO 306 - 17 - Elliptical galaxy ESO 306 - 17 - The galaxy ESO 306 - 17 is an isolated elliptical galaxy located about 500 million years ago - light from Earth. In the background, many distant galaxies are visible. This image from the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope highlights the large and bright elliptical galaxy called ESO 306 - 17 in the southern sky. In this image, it appears that ESO 306 - 17 is surrounded by other galaxies but the bright galaxies at bottom left are thought to be in the foreground, not at the same distance in the sky. In reality, ESO 306 - 17 lies fairly abandoned at half a billion light - years from Earth in an enormous sea of dark matter and hot gas / Bridgeman Images
PIX4613873: Irregular dwarf galaxy I Zwicky 18 - Irregular dwarf galaxy I Zwicky 18 - The irregular dwarf galaxy I Zwicky 18 is located 59 million years - light in the Great Bear and extends over about 3000 years - light. The two bright white spots are star-forming regions. At the top left, another galaxy is visible. This galaxy could be interacting with I Zwicky 18. This image is the result of observations made by the Hubble Space Telescope in 2005 and 2006. Called I Zwicky 18, this galaxy has a youthful appearance that resembles galaxies typically found only in the early universe. Hubble has now found faint, older stars within this galaxy, suggesting that the galaxy may have formed at the same time as most other galaxies. I Zwicky 18 is classified as a dwarf irregular galaxy and is much smaller than our Milky Way Galaxy. The concentrated bluish - white knots embedded in the heart of the galaxy are two major starburst regions where stars are forming at a furious rate. The wispy blue filaments surrounding the central starburst regions are bubbles of gas that have been blown away by stellar winds and supernovae explosions from a previous generation of hot, young stars. This gas is now heated by intense ultraviolet radiation unleashed by hot, young stars. A companion galaxy lies just above and to the left of I Zwicky 18. The companion may be interacting with I Zwicky 18 by gravitationally tugging on the galaxy. The interaction may have triggered the galaxy's recent star formation that is responsible for the youthful appearance. Besides the bluish - white young stars, white - reddish stars also are visible in both I Zwicky 18 and its companion. These stars may be as old as 10 billion years. The reddish extended objects surrounding I Zwicky 18 and its companion are ancient, fully formed galaxies of different shapes that are much farther away. Hubble data also allowed astronomers for the first time to identify Cephe / Bridgeman Images
PIX4614037: Statue of Claude Perrault in Paris: View of the statue of Claude Perrault (1613-1688), in the courtyard Napoleon du Louvre.. A doctor and architect, his statue represents him a comppas in one hand, and a drawing board in the other. Recommends to Colbert by his brother Charles Perrault, he participated in the elaboration of the Louvre colonnade with a view to restoring the eastern facade of the museum. Soon after, Colbert asked him to draw the plans for the Paris Observatory / Bridgeman Images
PIX4614112: Futuristic advertising poster for tourism on Jupiter - Illustration - Futuristic Advert for tourism on Jupiter - Illustration: Advertising promoting tourism on Jupiter. The southern and boreal aurora of Jupiter are hundreds of times more powerful than on Earth. The Jovian cloudscape boasts the most spectacular light show in the solar system, with northern and southern lights to dazzle even the most jaded space traveler. Jupiter's auroras are hundreds of times more powerful than Earth's, and they form a glowing ring around each pole that's bigger than our home planet. Revolving outside this auroral oval are the glowing, electric “” footprints”” of Jupiter's three largest moons. / Bridgeman Images
PIX4611992: Elliptical galaxy NGC 4881 and distant galaxies - Elliptical galaxy NGC 4881 and distant galaxies - The elliptical galaxy NGC 4881 (upper left) is about 300 million years away - light from Earth. NGC 4881 is located in the Coma galaxy cluster that contains at least 1,000 galaxies and is five times farther from us than the Virgin's cluster. Almost all the objects visible in this photo are located far behind the Coma cluster, except for the spiral galaxy to the right of Ngc 4881. Image obtained by the Hubble Space Telescope in 1994. This photo mosaic, which shows a field of distant galaxies, is a computer enhanced reproduction of a picture taken 4 March 1994 with the repaired Hubble Space Telescope. The brightest object in this picture is NGC 4881. It is a 13th - magnitude elliptical galaxy in the outskirts of the Coma Cluster, a great cluster of galaxies more than 5 times farther away than the Virgo Cluster. Except for a 16th - magnitude Coma spiral at the right and a few foreground stars of the Milky Way, almost everything else in this field lies far beyond the Coma Cluster. There is a fascinating assortment of background galaxies, including an apparent galaxian merger in progress / Bridgeman Images
PIX4612096: Spiral galaxy M63 (NGC 5055) in Hunting Dogs - Spiral galaxy M63 - The spiral galaxy M63 (NGC 5055) is about 35 million years away - light from Earth. Image obtained with a 50 cm telescope, composite of several poses. M63 (NGC 5055) is a spiral glaxy in the contellation Canes Venatici at about 35 million light - years from Earth / Bridgeman Images
PIX4612151: Spiral Galaxy M63 in Hunting Dogs - Spiral galaxy M63 in Canes Venatici - The spiral galaxy M63 (NGC 5055) is located about 35 million years ago - light from Earth. Image obtained with a 61 cm telescope, composite of several poses. M63 (NGC 5055) is a spiral glaxy in the contellation Canes Venatici at about 35 million light - years from Earth. Image taken with a 24 - inch telescope / Bridgeman Images
PIX4612157: Centaurus A Elliptical Galaxy (NGC 5128) in the Centaur - Galaxy Centaurus A - The NGC 5128 galaxy is about 13 million years away - light from Earth. This image obtained by the Hubble Space Telescope in 1998 shows the star flames that occur in the dark band of the galaxy. In blue, these are the clusters of newly shaped young stars. At the top left, a photo of the galaxy obtained from the ground. This giant galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. NGC 5128 is the nearest large elliptical galaxies to our sun. It is also the nearest of the giant radio galaxies, possessing an active galactic nucleus (AGN) and optically one of the most luminous galaxies in the sky. Among many other things NGC 5128 is also the prototypical postmerger elliptical galaxy. Structural peculiarities including the prominent rotating disk of stars and gas and the complex shell structure of its halo point to a large scale merger within the last billion years. Tidal streams of young stars have also been identified in the halo of NGC 5128 thought to have occurred by cannibalization of a nearby gas rich dwarf galaxy some 300 million years ago, long after the large scale merger. Elliptical galaxies are typically devoid of gas, dust and young stars. The unexpected presence of gas rich disk elements within the structure of NGC 5128 supports the current belief that accretions and mergers of low mass galaxies may be an important agent in the evolution of galaxy formation. As a radio galaxy, NGC 5128 belongs to the subgroup of galaxies called Active Galaxies, which include Quasars, Seyfert galaxies, Blazars and Radio Galaxies. Active galaxies are distinguished by their prodigious energy output which cannot be explained by their stellar populations and must have another source. Active galaxies have in common an “Active Galactic Nucleus (AGN)”” which is beli / Bridgeman Images
PIX4612202: Galaxy Centaurus A (NGC 5128) x-ray view - radio - visible - Galaxy Centaurus A in different wavelengths - false-coloured view of the 30,000-year long jet - light escaping from the nucleus of the Centaurus A galaxy where a massive black hole is suspected. On this composite image obtained in X, radio, and visible, two large X-emission arcs surround this jet over a diameter of 25,000 years - light. These hot arcs could be the result of a gigantic explosion that occurred 10 million years ago in the nucleus of the galaxy. The galaxy NGC 5128 is located about 13 million light years away from Earth. A composite X - ray (blue), radio (pink and green), and optical (orange and yellow) image of the galaxy Centaurus A presents a stunning view of a galaxy in turmoil. A broad band of dust and cold gas is bisected at an angle by opposing jets of high - energy particles blasting away from the supermassive black hole in the nucleus. Two large arcs of X - ray emitting hot gas were discovered in the outskirts of the galaxy on a plane perpendicular to the jets. The arcs of multimillion degree gas appear to be part of a projected ring 25,000 light years in diameter. The size and location of the ring indicate that it may have been produced in a titanic explosion that occurred about ten million years ago / Bridgeman Images