PIX4585161: Sundial at the Autumn equinox - Sundial at the Autumn equinox - Morning sundial dating from the 18th century. It was restored in 1981. It is visible in the courtyard of the Old College of Jesuites in Reims. The yellow lines represent the path of the end of the shadow of the style for the 21st of each month of the year. At the ends of these curves are the signs of the zodiac, which symbolize the different months of the year. The end of the shadow of the style indicates the autumn equinox. 17th century sundial in Reims (France), showing the sun 'shadow during autumn equinox / Bridgeman Images
PIX4581954: Castle of Saint Barthelemy under the stars - Starry sky above the castle of Saint - Barthelemy - Star sky above the ruins of the dungeon of the castle of Saint - Barthelemy in Ariege (Durban - sur - Arize). Starry sky above the castle of Saint - Barthelemy in Ariege (Durban - sur - Arize). 12th - 16th century / Bridgeman Images
PIX4585682: Prague Astronomical Clock - 15th century - The Prague Astronomical Clock - 15th century - The Prague Astronomical Clock - 15th century - The Prague City Hall Astronomical Clock, built by Nicholas of Kadau in 1410, and redesigned by Master Hanus de la Rose (Jan Ruze) around 1490. May 2007. (clock and calendar). Prague astronomical clock was made by clockmaker Mikulas of Kadan in 1410 and rearranged in 1490. May 2007 / Bridgeman Images
PIX4585697: Prague Astronomical Clock - 15th century - The Prague Astronomical Clock - 15th century - The Prague Astronomical Clock - 15th century - The Prague City Hall Astronomical Clock, built by Nicholas of Kadau in 1410, and redesigned by Master Hanus de la Rose (Jan Ruze) around 1490. May 2007. (detail). Prague astronomical clock was made by clockmaker Mikulas of Kadan in 1410 and rearranged in 1490. May 2007 / Bridgeman Images
PIX4585912: Astronomical clock of the cathedral of Strasbourg - Detail - Astronomical clock of Strasbourg Cathedral - Detail - Located in the cathedral of Strasbourg, the astronomical clock was built by a team of Swiss watchmakers in 1547. It was restored and modified between 1838 and 1843 by Jean-Baptiste Schwilgue, a Strasbourg watchmaker. However, a first clock, known as the “Three Kings”, existed from 1354. Here, the planetary and the phases of the moon. At the top of the clock, a ball indicates the phases of the Moon (here, the first quarter). Below, the planetary indicates the position of the planets around the Sun. It is surrounded by the twelve signs of the zodiac. In the foreground, the clock dial. The cathedral's south transept houses an 18 - mettre astronomical clock, one of the largest in the world, built in the 16th century. It was restored and modified in the 19th century / Bridgeman Images
PIX4586010: Clock astronomical de Lyon - Astronomical clock in Lyon - France - Detail of the astrolabe. The zodiac, the position of the Sun on the ecliptic, the lunar circle with the Moon in the last quarter. In the background, the map of the sky. Located in the Cathedrale Saint John, the clock dates back to 1379. Writings testifying to his presence in the cathedrale since 1383, making him one of the oldest astronomical clocks in Europe. It consists of a 1.80m square tower, surmounted by an octagonal turret presenting the automatons and a dome supporting a rooster. The whole peak is 9.35m high. The astronomical part consists of 3 parts: the astrolabe; below, the perpetual calendar, and on the right side, the minute dial. Astronomical clock - 16th century by Hugues Levet. Saint Jean Baptiste cathedral, Lyon, France. The Astrolab / Bridgeman Images
PIX4582396: Supernova type 1a 1994D in galaxy NGC 4526 - Supernova 1994D in galaxy NGC 4526 - Supernova 1994D, visible as the bright spot on the lower left, occurred in the outskirts of disk galaxy NGC4526. Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae. In fact, the light emitted during the weeksafter its explosion caused it to be given the familiar designation of a Type Ia supernova. If all Type 1a supernovae have the same intrinsic brightness, then the dimmer a supernova appears, the farther away it must be. By calibrating a precise brightness - distance relation, astronomers are able to estimate not only the expansion rate of the universe (parameterized by the Hubble Constant), but also the geometry of the universe we live in (parameterized by Omega and Lambda). The large number and great distances to supernovae measured in 1998 have been interpreted as indicating that we live in a previously unexpected universe / Bridgeman Images