SAN FRANCISCO — NASA reports “a great insertion orbit” for its newest orbiting telescope for studying the Sun’s dynamic temperature bands, which was drop-launched from a former airliner off the central California coast at 7:28 p.m. PDT June 27. The Interface Region Imaging Spectrograph (IRIS) spacecraft is to operate from about a 400-mi.-high Sun-synchronous orbit, from which it will study solar and plasma physics, space weather and astrophysics to gain a better understanding of how the ...

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