2012 - 10 - Meet ESA, the space agency for Europe Meet ESA, the space agency for Europe 4.88 /5 ( 57 votes cast) Rate this Video Currently 5 out of 5 Stars. Thank you for rating! You have already rated this page, you can only rate it once! Your rating has been changed, thanks for rating! Embed Code Details Meet ESA, the space agency for Europe English, French, German, Italian, Spanish, Czech Documentary You, together with your 500 million fellow citizens from ESA’s 20 European member nations, are the collective owners of one of the world’s leading space agencies. The European Space Agency is an intergovernmental organisation, a cooperative coming together of its Member States in their national interest and common good. This new video offers a quick introduction: Europe, meet ESA. Click on the tags to find the matching videos. Corporate Galileo , Mars Express , Planck , Vega Jean-Jacques Dordain , Thomas Reiter Ariane 5 , ATV , Cryosat 2 Satellite , EGNOS (European Geostationnary Navigation Overlay System) , GMES , Mars Express Orbiter , Soyuz launcher
Picture Album: Entire Collection Search all of HubbleSite Search Picture Album Picture Album: Entire Collection Results per page: View inShowcase Show Titles List Highest Resolution First search | site map | reference desk | about us | contact us | copyright Orbiting Earth 101: What You’d See / What You’d Do “I saw for the first time the earth’s shape. I could easily see the shores of continents, islands, great rivers, folds of the terrain, large bodies of water. The horizon is dark blue, smoothly turning to black. . . the feelings which filled me I can express with one word–joy.” -Yuri Gagarin It takes a tremendous amount of energy to do any type of heavy lifting, and the most extreme example of this is lifting something all the way up off of the Earth, out of the atmosphere, and into space! And once you’re up there, at least 300 km above the Earth’s surface, the sights you’ve got are bound to be absolutely amazing! But gravity is a funny thing. But while the Moon is 384,000 km away from the center of the Earth and takes about four weeks to orbit the Earth, these man-made satellites and space vehicles, at an altitude of around 300 km, are only 6,700 km away from the center of the Earth. Image credit: Boeing. But let’s take a look at the Earth itself.
NASA Supermassive-Black-Hole Gravity Discovery: "Confirms Einstein's Theory of Space-Time" Two X-ray space observatories, NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency's XMM-Newton , have teamed up to measure definitively, for the first time, the spin rate of a black hole with a mass 2 million times that of our sun that lies at the dust- and gas-filled heart of a galaxy called NGC 1365 (image above). Measuring the spin of a supermassive black hole is fundamental to understanding its past history and that of its host galaxy. The observations are a powerful test of Einstein's theory of general relativity, which says gravity can bend space-time, the fabric that shapes our universe, and the light that travels through it. The supermassive black hole is spinning almost as fast as Einstein's theory of gravity will allow. NuSTAR, an Explorer-class mission launched in June 2012, is designed to detect the highest-energy X-ray light in great detail. For more information on ESA's XMM-Newton mission, visit:
The Open Problems Project Next: Numerical List of All The Open Problems Project edited by Erik D. Demaine Joseph S. Joseph O'Rourke Introduction This is the beginning of a project1 to record open problems of interest to researchers in computational geometry and related fields. Each problem is assigned a unique number for citation purposes. The problems are also available as a single Postscript or PDF file. To begin navigating through the open problems, you may select from a category of interest below, or view a list of all problems sorted numerically. Categorized List of All Problems Below, each category lists the problems that are classified under that category. arrangements: 3-Colorability of Arrangements of Great Circles (Problem 44) art galleries: Vertex π-Floodlights (Problem 23) coloring: combinatorial geometry: convex hulls: data structures: Delaunay triangulations: dissections: Congruent Partitions of Polygons (Problem 73) folding and unfolding: geometric graphs: graph drawing: graphs: linear programming: lower bounds: meshing:
Giant Ribbon Discovered at the Edge of the Solar System + Play Audio | + Download Audio | + Join mailing list October 15, 2009: For years, researchers have known that the solar system is surrounded by a vast bubble of magnetism. Called the "heliosphere," it springs from the sun and extends far beyond the orbit of Pluto, providing a first line of defense against cosmic rays and interstellar clouds that try to enter our local space. Although the heliosphere is huge and literally fills the sky, it emits no light and no one has actually seen it. Until now. NASA's IBEX (Interstellar Boundary Explorer) spacecraft has made the first all-sky maps of the heliosphere and the results have taken researchers by surprise. Above: IBEX's all-sky map of energetic neutral atom emission reveals a bright filament of unknown origin. "This is a shocking new result," says IBEX principal investigator Dave McComas of the Southwest Research Institute. Although the ribbon looks bright in the IBEX map, it does not glow in any conventional sense. Stay tuned for updates.
The MARS Journal Vol 5, pp 76-128 - Geologic mapping and characterization of Gale Crater and implications for its potential as a Mars Science Laboratory landing site 1Ryan B. Anderson and 1James F. Bell III 1Department of Astronomy, Cornell University, Ithaca, NY 14853, USA Mars 5, 76-128, 2010 | doi:10.1555/mars.2010.0004 Received November 15, 2009 | Accepted July 13, 2010 | Published September 14, 2010 We mapped the geomorphologic units of the Gale crater central mound and the proposed Mars Science Laboratory landing site, developed an inferred stratigraphy, and assessed hypotheses for the origin of the mound. PDF 25.8 MB | ZIP 173 MB | TAR.GZ 173 MB | Supporting Files
Die Schöne Ebstorferin DIE SCHÖNE EBSTORFERIN von Michael Zick Die 700 Jahre alte Karte ist das größte mittelalterliche Welt-Bild. Forscher haben das seltene Stück aus dem Kloster Ebstorf rekonstruiert – einen zeittypischen Mix aus Kartografie und Mythologie. „Wer zum Paradies will, benötigt eine Leiter und muss darauf rund drei Meter hoch klettern. Die Leiter benötigt der Paradies-Sucher im Ebstorfer Kloster in der Lüneburger Heide, um die 3,58 mal 3,56 Meter messende „Ebstorfer Weltkarte“ betrachten zu können. Aus der wechselvollen Geschichte der ‚Schönen Ebstorferin’ Die Geschichte beginnt 1830, als im Ebstorfer Kloster Großreinemachen angesagt ist. Doch kaum aus der schützenden Dunkelkammer ans Licht geholt, beginnt der Zerstörungsprozess: Ein Unbekannter schneidet ein 66 mal 50 Zentimeter großes Stück heraus. 1891 wurde eine fotografische Reproduktion in Schwarz-Weiß angefertigt. 1930 schließlich entstand aus den Lichtdrucktafeln Sommerbrodts eine große Rollkarte, die mit Temperafarben übermalt wurde.
The Asteroid That Is Coming Really Close To Earth In February, Asteroid 2012 DA 14 will come so close to earth that it will be nearer to our planet than many satellites are. This asteroid, which really should get a new name, is about half the size of a football field. Its orbit is similar to that of the Earth itself, in size and shape, but at an angle to the Earth’s plane, so it’s like the asteroid and the earth are driving in circles on two oval tracks that intersect at two points but there is no red light. Asteroid 2012 DA 14 was discovered with gear provided to an observatory with a grant from the Planetary Society. Which makes me want to join the Planetary Society. This asteroid is not going to hit the earth now or during any of the next few decades, but eventually it may well do so. The closest approach will be on Feb 15th, when it will be a mere 27,330 kilometers from the surface of the earth.