 | Seeing The Invisible (Hubblecast 23 in HD Quality) HD Quality: http://www.youtube.com/watch?v=ftaPb0gM5XY&fmt=22 Seeing The Invisible (Hubblecast 23 in HD Quality) The Universe is a black void, with a scattering of stars, nebulae and galaxies - or so it appears to observers using visible light. But if we include other forms of radiation invisible to us, the picture changes completely: clouds of interstellar hydrogen gas, emitting radio waves; stellar nurseries, glowing in the infrared; explosive outbursts of gamma rays and the all-sky background hiss of the Big Bang, diluted by almost fourteen billion years of cosmic expansion. So how do astronomers learn about the unseen Universe? By building telescopes and detectors that can see the invisible. Watch this Hubblecast episode and find out more. Credit: • ESA/Hubble (M. Kornmesser & L. L. Christensen) • Visual design & Editing: Martin Kornmesser • Animations: Martin Kornmesser & Luis Calçada • Web Hosting: Leibniz-Rechenzentrum (LRZ) • Web Technical Support: Lars Holm Nielsen & Raquel Yumi Shida • Written by: Govert Schilling & Lars Lindberg Christensen • Host: Dr. J • Narration: Howard Cooper & Bob Fosbury • Cinematography: Peter Rixner • Music: movetwo • Directed by: Lars Lindberg Christensen Hubble European Space Agency Information Centre c/o Space Telescope-European Coordinating Facility (ST-ECF) Att. Lars Lindberg Christensen, ESO office 011 Karl-Schwarzschild-Str. 2 DE-85748 Garching bei München Germany http://www.spacetelescope.org/ . |
 | JMDMT #2170 Microfossils of Cyanobacteria in Carbonaceous Meteorites The James M. DuPont Meteorite Collection - would continue to grow. Since all other C phases are unstable in the strong radiation fields of a C star, sooner or later they will be dissociated again into gaseous compounds. As a consequence, the diamond phase is expected to slowly accumulate in the star's atmosphere. Interstellar microdiamonds may probably be the most important C sink in cool interstellar dust clouds. This consequence may explain the high abundance of interstellar microdiamonds. 10. The C fixed in interstellar microdiamonds would be recycled as soon as the particles are re-heated to temperatures above ~1500 degrees C. At this temperature, diamond spontaneously transforms into the thermodynamic |
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