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A comment on When a Telescope Is a National-Security Risk.

Re:When a Telescope Is a National-Security Risk by Salmonfisher11 on Monday December 02, 2024 @06:01PM (#42301286)
There are enough space radars so that you can passively listen to the reflections of almost every satellite.

Just pointing to the Graves Radar in France whose frequency and beam pattern is precisely known to the public.

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