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2013•NASA STI Repository (National Aeronautics and Space Administration)Open access

Orbital Debris and Future Environment Remediation

J.‐C. Liou

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Abstract

How Much Junk Is Currently Up There?How Much Junk Is Currently Up There? S f ( ) Softball size or larger (≥10 cm): ~22,000 (tracked by the Space Surveillance Network) Marble size or larger (≥1 cm): ~500,000 Dot or larger (≥1 mm): ~100 000 000 Dot or larger (≥1 mm): ~100,000,000 (a grain of salt) • Total mass: ~6300 tons LEO-to-GEO (~2700 tons in LEO) • Due to high impact speed in space (~10 km/s in LEO) even sub-mm debris 9/36 JCL

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How Much Junk Is Currently Up There?How Much Junk Is Currently Up There? S f ( ) Softball size or larger (≥10 cm): ~22,000 (tracked by the Space Surveillance Network) Marble size or larger (≥1 cm): ~500,000 Dot or larger (≥1 mm): ~100 000 000 Dot or larger (≥1 mm): ~100,000,000 (a grain of salt) • Total mass: ~6300 tons LEO-to-GEO (~2700 tons in LEO) • Due to high impact speed in space (~10 km/s in LEO) even sub-mm debris 9/36 JCL

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Available abstract

How Much Junk Is Currently Up There?How Much Junk Is Currently Up There? S f ( ) Softball size or larger (≥10 cm): ~22,000 (tracked by the Space Surveillance Network) Marble size or larger (≥1 cm): ~500,000 Dot or larger (≥1 mm): ~100 000 000 Dot or larger (≥1 mm): ~100,000,000 (a grain of salt) • Total mass: ~6300 tons LEO-to-GEO (~2700 tons in LEO) • Due to high impact speed in space (~10 km/s in LEO) even sub-mm debris 9/36 JCL

Key concepts: Debris, Space debris, Population, Astrobiology, Environmental remediation, Environmental science, Geography, Meteorology

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