Las nebulosas pueden ser cuna de estrellas o el resultado del fin de su vida. En el espacio profundo y a través de instrumentos de última tecnología, se observan detalles de nubes que estuvieron siempre en el cielo, pero invisibles al ojo humano. Algunas no cumplen esta regla, como la gran nebulosa de Orión, que se puede observar a simple vista. Visibles o invisibles a nuestro ojo, todas presentan llamativos colores y formas.
SECUENCIA FOTOGRAFICA DE LA CONSTRUCCION DEL EDIFICIO IFIR
( INSTITUTO DE FISICA ROSARIO )
ROSARIO - ARGENTINA
El Instituto de Física Rosario ( IFIR ) es una unidad del Consejo Nacional de Investigaciones Científicas y Técnicas ( CONICET ), orientado a la realización de investigaciones y desarrollos en todos los aspectos vinculados a la Física. Así, promueve las actividades científicas y tecnológicas tanto en las ciencias de base como en las ciencias aplicadas y en las ingenierías relacionadas. IFIR participa en la formación de recursos humanos, integrándo y colaborando estrechamente con las diversas facultades de la Universidad Nacional de Rosario (UNR) y otros Organismos Nacionales e Internacionales.
27 de Febrero 210 bis
Secretaría General: 0341- 4853200 / 0341- 4853222 (de 8.30 a 16.30 hs).
A mere 2.5 million light-years away the Andromeda Galaxy, also known as M31, really is just next door as large galaxies go. So close and spanning some 260,000 light-years, it took 11 different image fields from the Galaxy Evolution Explorer (GALEX) satellite's telescope to produce this gorgeous portrait of the spiral galaxy in ultraviolet light. While its spiral arms stand out in visible light images of Andromeda, the arms look more like rings in the GALEX ultraviolet view, a view dominated by the energetic light from hot, young, massive stars. As sites of intense star formation, the rings have been interpreted as evidence Andromeda collided with its smaller neighboring elliptical galaxy M32 more than 200 million years ago. The large Andromeda galaxy and our own Milky Way are the most massive members of the local galaxy group.
It has been one of the better skies of this long night. In parts of Antarctica, not only is it winter, but the Sun can spend weeks below the horizon. At China's Zhongshan Station, people sometimes venture out into the cold to photograph a spectacular night sky. The featured image from one such outing was taken in mid-July, just before the end of this polar night. Pointing up, the wide angle lens captured not only the ground at the bottom, but at the top as well. In the foreground is a colleague also taking pictures. In the distance, a spherical satellite receiver and several windmills are visible. Numerous stars dot the night sky, including Sirius and Canopus. Far in the background, stretching overhead from horizon to horizon, is the central band of our Milky Way Galaxy. Even further in the distance, visible as extended smudges near the top, are the Large and Small Magellanic Clouds, satellite galaxies near our huge Milky Way Galaxy.
What's happening over Bryce Canyon? Two different optical effects that were captured in one image taken earlier this month. Both effects needed to have the Sun situated directly behind the photographer. The nearest apparition was the common rainbow, created by sunlight streaming from the setting sun over the head of the photographer, and scattering from raindrops in front of the canyon. If you look closely, even a second rainbow appears above the first. More rare, and perhaps more striking, are the rays of light that emanate out from the horizon above the canyon. These are known as anticrepuscular rays and result from sunlight streaming though breaks in the clouds, around the sky, and converging at the point 180 degrees around from the Sun. Geometrically, this antisolar point must coincide with the exact center of the rainbows. Located in Utah, USA, Bryce Canyon itself contains a picturesque array of ancient sedimentary rock spires known as hoodoos.
Ridges of glowing interstellar gas and dark dust clouds inhabit the turbulent, cosmic depths of the Lagoon Nebula. Also known as M8, The bright star forming region is about 5,000 light-years distant. But it still makes for a popular stop on telescopic tours of the constellation Sagittarius, toward the center of our Milky Way Galaxy. Dominated by the telltale red emission of ionized hydrogen atoms recombining with stripped electrons, this stunning, deep view of the Lagoon's central reaches is about 40 light-years across. Near the center of the frame, the bright hourglass shape is gas ionized and sculpted by energetic radiation and extreme stellar winds from a massive young star.