https://www.aanda.org/articles/aa/abs/2008/38/aa10672-08/aa10672-08.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
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https://www.scrippsnews.com/science-and-tech/space/scout-asteroid-detection-system-gave-nasa-5-day-warning
The Scout program was able to warn NASA of a potentially dangerous asteroid before it flew near Earth.
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