HONOLULU, Dec. 4, 2025 — Acoustic signals have been important markers during NASA’s Mars missions. Measurements of sound can provide information both about Mars itself — such as turbulence in its ...
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How submarines avoid detection, sonar, silence, and the physics of staying hidden underwater
Submarines survive by exploiting how sound moves through the ocean, from passive sonar and anechoic tiles to thermoclines, shadow zones, and ultra-quiet propulsion. This explains the physics, ...
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