PIX4570847: Comete 17P/Holmes and Persee constellation - Comet 17P/Holmes and Perseus constellation - 24 October 2007, Quimper In a few hours, on 24 October 2007, comet 17P/Holmes changed from magnitude 17 (an invisible star even in a good telescope) to magnitude 3, that is, bright enough to be easily visible even in the city or by a full moon night. Tonight, she's visible like a star in the middle of Persee's thigh. Helas, its appearance is stellar since it has no tail. On Oct. 24, 2007, in a few hours, a comet has brightenned from magnitude 17 (invisible in a good instrument) to magnitude 3, bright enough to be visible with naked - eyes from a city or during a Full Moon night. This comet is Holmes. Tonight, it is visible as a new star in the thigh of Perseus constellation. But it displays no tail and keep a stellar aspect / Bridgeman Images
TEC4571441: Palais du Hanover, Paris 2nd arrondissement. Construction 1932, architects Victor Laloux (1850-1937) and Charles Lemaresquier (1873-1972). Former Berlitz Palace in Art Deco style, this building was completely restructured in 1996 and acquired by Unibail to make it an office complex. / Bridgeman Images
PIX4571657: Star Sky in Winter - Starry Sky in Winter - A woman in the Lofoten Mountains in Norway. In the sky, the winter hexagon, an asterism formed by the stars Sirius (masked by the mountain), Procyon, Pollux, Capella, Aldebaran and Rigel. A female hiker is seen on the top of a mountain in Lofoten, Norway, under the Winter Hexagon, an asterism formed by Sirius (hidden by the mountain), Procyon, Pollux, Capella, Aldebaran and Rigel / Bridgeman Images
PIX4571864: Barnard's Star Movement - The proper motion of Barnard's star - Barnard's Star is a red dwarf less than six years from Earth in the constellation Ophiuchus. Its proximity makes it move quickly ahead of the other stars. Barnard's star is known for having the most important clean movement. This composite image made from three images taken in 1988 (blue), 1991 (red) and 1993 (green) shows the shift of the star in 15 years. Barnard's Star is red dwarf star approximately 6 light - years away from Earth in the constellation of Ophiuchus Its proper motion is 10.3 arcseconds per year, which remains the largest known proper motion of any star relative to the Sun. The monochrome plates from which this 3 - colour picture were made were taken in 1988 (blue), 1991 (red) and 1993 (green) showing its movement over 15 years / Bridgeman Images