Authors: George Rajna
Saturn's distinctive rings were observed in unprecedented detail by NASA's Cassini spacecraft, and scientists have now used those observations to probe the interior of the giant planet and obtain the first precise determination of its rotation rate.  Down a hallway in the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL), scientists study the workings of a machine in a room stuffed with wires and metal components.  Active galactic nuclei (AGN) are among the most dramatic and interesting phenomena in extragalactic astronomy. 
Comments: 72 Pages.
[v1] 2019-01-20 11:35:10
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