Abstract: With the improvement of satellites' maneuverability, agile earth observation satellites (AEOSs) can pitch and roll themselves to observe targets with a longer visible time window (VTW), ...
Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...
In the nearby galaxy NGC 4258, the well-modeled orbital motion of H2O masers about its supermassive black hole provides the means to measure a precise geometric distance. As a result, NGC 4258 is one ...
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