![]() "This new information can help us tell the story of how our "With these better estimates, we can look back at the history of our galaxy," saidĬonnie Rockosi of the University of California Santa Cruz, who leads the SDSS. DR9 includes better estimatesįor the chemical compositions of more than half a million stars in our own galaxy. The new data in DR9 are not only helping us understand the distant Universe, butĪlso our own cosmic backyard, the Milky Way galaxy. Imprinted by the intergalactic gas and underlying dark matter that lies Objects in the distant Universe, and their spectra reveal intricate patterns To measure the distribution of matter in the Universe. Quasars provide further details to the three dimensional map and another way Structure of the Universe than has been measured before. The third dimension in the DR9 map, providing a more detailed view of the Measure of light from a galaxy at different wavelengths from this information weĬan measure the distances to those galaxies. It includes new spectra fromĥ40,000 galaxies from when the Universe was half its present age. That map of the Universe is the centerpiece of DR9. Observatory), and the SDSS-III Collaboration Paul Preuss (Lawrence Berkeley National Laboratory), Dan Long (Apache Point Markings on the plate (visible in the close-up view in theĬenter-right) aid with the hand-plugging of the fibers. Optic cable (red and blue in the bottom image) connects each hole to the Hole in the plate matches the position of a star or galaxy. The SDSS uses to measure the spectra of a thousand galaxies at a time. The top left image shows the meter-wide aluminum plate that The bottom image shows The Sloan Foundation Measure distances to the thousands of galaxies in Data Release 9. Guide us, or someone else, in solving these mysteries." Said David Schlegel of Lawrence Berkeley National Laboratory, who led the SDSS-IIIĮffort to map these galaxies and quasars. "Dark matter and dark energy are two of the greatest mysteries of our time," How much of the Universe is made up of dark matter - matter that we can'tĭirectly see because it doesn't emit or absorb light - and dark energy, theĮven more mysterious force that drives the accelerating expansion of the Universe. With that history, they can get better estimates for With such a map, scientists can retrace the history of the Universe over the Gas - from as long ago as 12 billion years in the past. Galaxies over the past six billion years of cosmic time, as well asġ60,000 quasars - giant black holes actively feeding on stars and Which will eventually measure the positions of 1.5 million massive This release includes new data from the ongoing SDSS-IIIīaryon Oscillation Spectroscopic Survey (BOSS), Is to create a map of the Universe that will be used long after we areĭone, by future generations of astronomers, physicists and the generalĭata Release 9 is the latest in a series of data releases stretchingīack to 2001. ![]() "What really makes me proud of this survey is our commitment toĬreating a legacy for the future," said Michael Blanton, a professorĪt New York University who led the team that prepared DR9. Of the movie available - it uses traditional red/blue movie theater glasses. (Lawrence Berkeley National Laboratory, NERSC), and the SDSS-III ![]() (Adler Planetarium), Alex Szalay (Johns Hopkins University), Yushu Yao Aragón (Johns Hopkins University), Mark SubbaRao The distribution of dark matter in the Universe. Is exploring this structure to determine the nature of dark energy and Into clusters and filaments with voids in between. Image that matches the actual shape of the galaxy. The location mapped by SDSS and is represented by the zoomed-in template Video, or select one of the Download Movie options aboveĮach galaxy in the animation is placed at SDSS-III galaxies mapped in Data Release 9. Week, makes available the first third of the galaxy map that this six-year New release of data, SDSS-III has begun to expand this image into a full Three-dimensional map of massive galaxies and distant black holes, which will helpĪstronomers explain the mysterious "dark matter" and "dark energy" that scientists knowĮarly last year, the SDSS-III released the largest-ever image of the sky. The Sloan Digital Sky Survey III (SDSS-III) has released the largest-ever ![]() New 3-D Map of Massive Galaxies and Distant Black Holes Offers Clues to Dark Matter and Dark Energy
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