3-D Catalogs


3-D Catalogs

Three-dimensional data in the Digital Universe are simply described by particles placed in 3-D space. Most of the 3-D data sets are centered on the Sun (in the Milky Way Atlas, the positions of the Earth and Sun are virtually the same, as they are 0.00000485 parsecs apart), and, as these are observed catalogs, they often suffer from severe observational bias. For example, we know the Milky Way contains hundreds of billions of stars, but we have reliable distances only to the thousands that surround the Sun.


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© 2002-2005 American Museum of Natural History
Last Modified: 2007-12-19 by Brian Abbott