PIX4571607: Summer Triangle - Summer Triangle - The Summer Triangle is an asterism formed by the brilliant stars Deneb (at the top of the picture, in the Swan), Vega (on the right in the Lyre) and Altair (on the left, in the Eagle). Summer Triangle is an asterism made of three bright stars: Deneb (top in Cygnus, Vega (right in Lyra) and Altair (left in Aquila) / Bridgeman Images
PIX4571623: Constellation of the Great Bear - Constellation of Ursa Major: Plate extracted from the Mirror of Urania -1824. Ursa Major, the constellation of the Great Bear, from Urania's Mirror, a colourful set of constellation cards published in 1824. Over the years, the star at the end of the tail has been known by two popular names, Alkaid and Benetnasch but Alkaid is now the official name / Bridgeman Images
PIX4571758: Star Vega in the Lyre - Star Vega in infrared - Vega (Alpha Lyrae) is the main star of the constellation Lyra, located only 25.4 light years from the Sun. It is the second brightest star after Sirius in the northern hemisphere. It's seen here in infrared by the Spitzer space telescope. Observed in this wavelength, the dust cloud surrounding the star appears. Nasa's Spitzer Space Telescope captured these images of the star Vega, located 25 light years away in the constellation Lyra. Spitzer was able to detect the heat radiation from the cloud of dust around the star and found that the debris disk is much larger than previously thought. This side - by - side comparison, taken by Spitzer's multiband imaging photometer, shows the warm infrared glows from dust particles orbiting the star at wavelengths of 24 microns (on the left in blue) and 70 microns (on the right in red). Both images show a very large, circular and smooth debris disk. The disk radius extends to at least 815 astronomical units. (One astronomical unit is the distance from Earth to the Sun, which is 150 - million kilometers or 93 - million miles). Scientists compared the surface brightness of the disk in the infrared wavelengths to determine the temperature distribution of the disk and then refer the corresponding particle size in the disk. Most of the particles in the disk are only a few microns in size, or 100 times smaller than a grain of Earth sand. These fine dust particles originate from collisions of embryonic planets near the star at a radius of approximately 90 astronomical units, and are then blown away by Vega's intense radiation. The mass and short lifetime of these small particles indicate that the disk detected by Spitzer is the aftermath of a large and relatively recent collision, involving bodies perhaps as big as the planet Pluto. The images are 3 arcminutes on each side. North is oriented upward and east is to the left / Bridgeman Images
PIX4571821: Proxima Star of Centauri - Proxima Centauri - Proxima of Centaur (in the center of the image) is the closest star to the Sun, at a distance of 4.2 years - light. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. Proxima Centauri is the nearest known star to the sun, at a distance of about 4.2 light years. It is an intrinsically faint red star, more than ten magnitudes (ten thousand times) fainter than the Sun. It is also much cooler, with a surface temperature of about 3100 C. Its visual (apparent) magnitude is eleven, so it is only visible with a good telescope, and only then from southern latitudes. Proxima is about one - tenth the mass of the sun, which accounts for its low surface temperature. It is possibly an outlying member of the triple alpha Centauri system just a few light days closer to us than the other, much brighter stars in the group / Bridgeman Images
ITR4561887: Vault with Corinthian columns of LaChapelle royale began by Jules Hardouin Mansart (1646-1708) in 1699 and completed in 1710 by Robert De Cotte (1656-1735).Chateau de Versailles (Les Yvelines). Principal architects: Louis Le Vau (1612-1670) and Jules Hardouin Mansart (1646-1708), 1660-1700. / Bridgeman Images
ITR4561943: The dairy in the hamlet of the Queen in the northwest part of the garden of the Peer Trianon, built in 1782 by Hubert Robert (1733-1808). Chateau de Versailles (Les Yvelines), 1660-1700. Principal architects: Louis Le Vau (1612-1670) and Jules Hardouin Mansart (1646-1708). / Bridgeman Images