PIX4572490: The smallest stars - Artist's view - The smallest stars. Artwork - Comparison to the scale of the smallest stars with Jupiter and the Sun. From left to right: Jupiter, a brown dwarf (same size as Jupiter but 50 times more massive), dwarf L (younger brown dwarf), red dwarf, Sun. From left to right: Jupiter (a failed star), a brown dwarf (same size as Jupiter but 50 times more massive), a “” L”” dwarf (brown dwarf younger), a red dwarf and the sun for comparison / Bridgeman Images
PIX4572272: Star V838 Monocerotis 08/02/2004 - V838 Monocerotis 02/2004 - This variable star is located approximately 20,000 years - light from Earth in the constellation Unicorn. In the beginning of 2002, this star illuminated temporarily becoming one of the brightest stars in the sky. Viewed here in February 2004 by the Hubble space telescope, the light echo shows details in the interstellar dust surrounding the star. In January 2002, a variable star in the Monoceros constellation suddenly became 600,000 times more luminous than our Sun, temporarily making it the brightest star in our Milky Way galaxy. The mysterious star, called V838 Monocerotis, has long since faded back to obscurity. Seen here by Nasa's Hubble Space Telescope on February 8, 2004, the light echo around the star has uncovered details in the interstellar dust round the star / Bridgeman Images
PIX4572591: Nova de l'Eagle - Nova Aquilae. Artwork - Artist's view of a nova, a white dwarf star that attracts the material of a companion star at the end of life, a red giant, and compresses these gases and then unleash a nuclear fusion reaction releasing a huge amount of energy in the form of a brief, extremely bright light. Here the artist showed the binary system just before the explosion of the nova. The artist's illustration depicts a classical nova binary system just before an explosion on the surface of the white dwarf. Classical novas occur in a system where a white dwarf closely orbits a normal, companion star. In this illustration, gas is flowing from the large red, companion star into a disk and then onto the white dwarf that is hidden inside the white area. As the gas flows ever closer to the white dwarf, it gets increasingly hotter, as indicated by the change in colors from yellow to white. When the explosion occurs, it engulfs the disk of gas and the red companion star / Bridgeman Images
PIX4572713: Artist's view of a fugitive star - A runaway star in the Large Magellanic cloud - The star HE0457 - 5439 is a massive star in the Grand Cloud of Magellan; it is a star escaping from this galaxy at a speed of 2.6 Million km/h Background image obtained at the observatory of La Silla in Chile; the star fleeing has been added on the image. The star HE0457 - 5439 is a massive star wich lies closer to one of the Milky Way satellite galaxies, the Large Magellanic Cloud, located 160,000 light - years away from us. This is a runaway star, moving at more than 2.6 million kilometers per hour. Astronomers find it likely for the star to have reached its present position had it been ejected from the centre of the LMC. The background image has been obtained at La Silla observatory, the star moving has been added / Bridgeman Images
PIX4572752: Artist's view of an eruptive star - Flare star - Artwork: DG Canum Venaticorum (DG CVN) is a binary star located in the constellation Hunting Dogs. On 23 April 2014, a powerful gamma eruption from this system was recorded by the Swift satellite. DG Canum Venaticorum (DG CVN) is a binary star system in the northern constellation of Canes Venatici. On 2014 April 23, 2014, a gamma-ray superflare event was observed by the Swift satellite coming from the position of this system. It may have been perhaps the most luminous such events ever observed coming from a red dwarf star / Bridgeman Images
PIX4572809: Artist's view of a magnetar and its magnetic field - A magnetar with its magnetic field. Artwork - Illustration showing the magnetic field lines of a magnetar. This artist's concept shows a magnetar - - a neutron star with a super - strong magnetic field, represented by the lines in this illustration / Bridgeman Images
PIX4573375: Exoplanete HD 209458b - Artist's view - This exoplanet located in the constellation Pegase, about 150 years ago - light from Earth, seems to be a gas giant whose hydrogene evaporates. An international team of astronomers led by Alfred Vidal - Madjar (Institut d'Astrophysique de Paris, CNRS, France) observed the first signs of oxygen and carbon in the atmosphere of a planet beyond our Solar System for the first time using the NASA/ESA Hubble Space Telescope. The atoms of carbon and oxygen are swept up from the lower atmosphere with the flow of escaping atmospheric atomic hydrogen - like dust in a supersonic whirlwind - in a process called atmospheric 'blow off'. Credit: European Space Agency and Alfred Vidal - Majar (Institut d'Astrophysique de Paris, CNRS, France / Bridgeman Images
PIX4573429: Artist's view of a hot Jupiter HD 149026b - Exoplanet HD 149026b - Hot Jupiter - HD 149026b (in the background) is to date the hottest exoplanet in the universe. This warm Jupiter reaches a temperature of 2000 degrees; it absorbs almost all the light of its star and is therefore also the darkest planet in the universe. HD 149026b is located 256 years - light in the constellation Hercules. This artist's concept illustrates the hottest planet yet observed in the universe. This “” hot Jupiter”” called HD 149026b, is a sweltering 3,700 degrees Fahrenheit (2,040 degrees Celsius) - about 3 times hotter than the rocky surface of Venus, the hottest planet in our solar system. The planet is so hot that astronomers believe it is absorbing almost all of the heat from its star, and reflecting very little to no light. Objects that reflect no sunlight are black. Consequently, HD 149026b might be the blackest known planet in the universe, in addition to the hottest. HD 149026b is located 256 light - years away in the constellation Hercules. It is the smallest known transiting planet, with a size similar to Saturn's and a suspected dense core 70 to 90 times the mass of Earth. It speeds around its star every 2.9 days / Bridgeman Images
PIX4572812: Artist's view of a magnetar and its magnetic field - A magnetar with its magnetic field. Artwork - Illustration showing the magnetic field lines of a magnetar that intertwine causing tensions on the surface of the neutron star that partially breaks causing an emission of X-rays and gamma rays. A magnetar is a neutron star with an extremely powerful magnetic field. This artwork shows magnetic field lines of the star causing X and gamma rays burst when they mix / Bridgeman Images
PIX4573100: Planet around the star Fomalhaut - Planet orbiting star Fomalhaut - First visible light photo of an extrasolar planet obtained by the space telescope Hubble. The planet called Fomalhaut b, is a planet with a mass close to Jupiter, orbiting the star Fomalhaut, 25 years - light from Earth in the constellation of Southern Fish. The star Fomalhaut (indicated by a white dot) is hidden here to show the dust disc surrounding it and the position of the planet. Located at a distance of about four times that separating Neptune from the Sun, Fomalhaut b makes a complete orbit around its star in 872 years. November 2008 - This image, taken with the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope, shows the newly discovered planet, Fomalhaut b, orbiting its parent star, Fomalhaut. The small white box at lower right pinpoints the planet's location. Fomalhaut b has carved a path along the inner edge of a vast, dusty debris ring encircling Fomalhaut that is 34.5 billion kilometers across. Fomalhaut b lies three billion kilometers inside the ring's inner edge and orbits 17 billion kilometers from its star. The inset at bottom right is a composite image showing the planet's position during Hubble observations taken in 2004 and 2006. Astronomers have calculated that Fomalhaut b completes an orbit around its parent star every 872 years. The white dot in the centre of the image marks the star's location. The region around Fomalhaut's location is black because astronomers used the Advanced Camera's coronagraph to block out the star's bright glare so that the dim planet could be seen. Fomalhaut b is 100 million times fainter than its star. The radial streaks are scattered starlight. The red dot at lower left is a background star. The Fomalhaut system is 25 light - years away in the constellation Piscis Austrinus. This false - colour image was taken in October 2004 and July 2006 / Bridgeman Images
TEC4573621: Urban layout, the Terrasse de Nanterre and Puteaux (Hauts de Seine). It was not until the end of the 1990s that a real project to rehabilitate the entire territory linking the Arche to the Seine was evoked. In 2000, a Seine-Arche public facility (EPASA) was created under the supervision of the Ministry of Equipment. Its mission: to rehabilitate a 124 ha territory between the Grande Arche and the Seine declared of national interest, which will thus complete the historical axis of Le Notre (Louvre, Tuileries, Concorde, Champs-Elysees, Arc de Triomphe, Grande Arche). In November 2002, the project “Les Terrasse de Nanterre”, by urban planners Treuttel-Garcias-Treuttel, was chosen. It aims to transform three kilometres of vacant terrain, segmented by noisy road and rail infrastructures, into a humanise, green and economically dynamic space. A program that remains respectful of the popular identity of Nanterre: 40% of the dwellings built will be devoted to social housing. Photography 14/04/07. / Bridgeman Images