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Searched for: GEM Subject is Science -- Physical sciences
Results 566 - 570 of 669
This resource covers the nature and components of the Milky Way, including the disk, spiral arms, nucleus, dark matter halo, globular clusters, and central bulge; the interstellar medium, including gas, dust, HI and HII...
This resource covers Seyfert galaxies, radio galaxies, BL Lacertae (BL Lac) objects, quasars, supermassive black holes, determining masses in galactic centers using the virial theorem, and a model for active galactic...
This story from Discover Magazine follows the career of paleontologist Stephen Hasiotis, who specializes in terrestrial ichnology, as he searches for the tracks of ancient invertebrates, even where a fossil record is...
This resource covers intrinsic and orbital properties of the moon; tides and gravitational locking; surface properties of the moon; interior and geological activity of the moon; and theories of its formation, such as...
Established in 1988 as a national resource for molecular biology information, the National Center for Biotechnology Information (NCBI) creates public databases, conducts research in computational biology, develops...
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