In Pursuit of Precision: Remembering John Barker John L. Barker, who passed away on July 6, 2026, at age 88, was a seminal force who fundamentally transformed Landsat into a rigorous science mission through his relentless pursuit of precision remote sensing calibration standards.
ASA Science.
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with qualified healthcare professionals for medical decisions and treatment options.
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