PIX4582940: Remnants of the supernova Cassiopee A in X-rays - visible and infrared - This stunning picture of the supernova remnant Cassiopeia A (Cas A) is a composite of images taken by three of Nasa's Great Observatories. Infrared data from the Spitzer Space Telescope are colored red; optical data from the Hubble Space Telescope are yellow; and X - ray data from the Chandra X - ray Observatory are green and blue. Cas A is the 300 - year - old remnant created by the supernova explosion of a massive star. Each Great Observatory image highlights different characteristics of the remnant. Spitzer reveals warm dust in the outer shell with temperatures of about 10 degrees Celsius (80 degrees Fahrenheit), and Hubble sees the delicate filamentary structures of warmer gases about 10,000 degrees Celsius. Chandra shows hot gases at about 10 million degrees Celsius. This hot gas was created when ejected material from the supernova smashed into surrounding gas and dust at speeds of about ten million miles per hour. A comparison of the infrared and X - ray images of Cas A should enable astronomers to better understand how relatively cool dust grains can coexist in the superhot gas that produces the X - rays. It should also help to determine whether most of the dust in the supernova remnant came from the massive star before it exploded, or from the rapidly expanding supernova ejecta. The turquoise dot at the center of the shell may be a neutron star created during the supernova. Blue Chandra data were acquired using broadband X - rays (low through high energies); green Chandra data correspond only to intermediate energy X - rays; yellow Hubble data were taken using a 900 nanometer - wavelength filter, and red Spitzer data are from the telescope's 24 - micron detector. Observation Dates 9 pointings between Feb 8 - May 5, 2004 Observation Time 11 days, 14 hours Distance Estimate About 10,000 light year / Bridgeman Images
PIX4584791: Artist view of Cygnus X-1 - Cygnus X-1 is a binary star X and was the first black hole candidate. This system consists of the 226868 HD star, a supergeant star, orbiting around a black hole. A stellar black hole is born from the gravitational collapse of a massive star. The stellar black holes have a mass of some solar masses. A black hole is a region of space whose gravitation is so strong that it will prevent any form of material or radiation from escaping. Cygnus X-1 is an X-ray binary system and the first black hole candidates to be discovered / Bridgeman Images
PIX4589747: Constellations of Cassiopee and Cephee - Cassiopeia and Cepheus with constellation lines - Constellations Cassiopeia and Cepheus are two of the most famous constellations in the Northern skies. The shapes of the constellations were drawn on top and some important objects were highlited / Bridgeman Images
PIX4592866: Winter Sky - Winter Sky - Star sky above the Alps. In the sky, the constellations of the Taurus (right), Orion (center), and the bright star Sirius (lower left). A shooting star crosses the constellation of Taurus. January 3, 2011. Starry sky above english Alps. In the sky, constellations of Taurus (at right), Orion (centre), and bright star Sirius (bottom left). A shooting star is crossing Taurus constellation. January 3rd 2011 / Bridgeman Images
PIX4592385: Constellation of Ophiuchus - Constellation of Ophiuchus - Constellation of Ophiuchus extracted from the Uranographia of Hevelius. Recolorised image. Map showing the constellation of Ophiuchus with its mythological form from “” Uranographia”” star atlas by Hevelius (1690). Recolored Image / Bridgeman Images
YOU4420136: View of Place Vendome and the Vendome Column, the square designed by Jules Hardouin Mansart (1646-1708), architect of King Louis XIV, The column was erected in 1810 by Naoleon to commemorate the battle of Austerlitz, inspired by the Trajane column in Rome, covered with low reliefs representing scenes of battles, it is surmounted by a statue of Napoleon 1st by Auguste Dumont (1801-1884). Photography, KIM Youngtae, Paris. / Bridgeman Images