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The value of the GPS SPS PS goes far beyond the specific parameters that it contains. It has a great deal of information regarding how GPS operates and ideally should be read in full (including the appendices) by everyone who works with GPS at the measurement level. This column reviews the information in the latest SPS PS and shows how it improves the performance of GPS applications. Since this information is used in real time to generate error bounds at high probabilities (“protection levels”) for applications with demanding integrity and continuity requirements, it also discusses the or...

UArizona Will Lead NASA Space Telescope Mission to Reveal Unseen, Dynamic Lives of Galaxies NASA has selected Carlos Vargas, a postdoctoral researcher in UArizona's Steward Observatory, to lead a $20 million mission to build a space telescope that will map vast regions of star-forming gas that have eluded observation for decades.   By Daniel Stolte, University of Arizona Jan. 7, 2021 Located 12 million light-years from Earth in the constellation Ursa Major, M82, or the "Cigar Galaxy," is known for its intense rate of star formation. Vast regions of gas provide the fuel from whic...

NASA has selected Carlos Vargas, a UArizona postdoctoral researcher, to lead a $20 million mission to build a space telescope that will map vast regions of star-forming gas that have eluded observation for decades.