Astronomy’s Unsung Hero is a Plain Ol’ Aluminum Ball

The Lincoln Calibration Sphere 1 (LCS-1), launched in 1965, is a simple aluminum sphere used for calibrating scientific instruments in space. Despite its simplicity, LCS-1 has played a crucial role in radar calibration and astronomy, helping scientists measure the Moon's surface and study Earth's atmosphere. Over the decades, LCS-1 has experienced wear but remains useful for tracking space debris and exploring future applications in space exploration.

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