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Astronomy · L4 · The Solar System: planets, asteroid belt, and Kuiper Belt

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The Solar System to scale: eight planets, asteroid belt, and Kuiper Belt beyond Neptune.

by @openstemUpdated Astronomy
☀ Sun~99.86% Solar System massG2V star, T_core = 15 MKMercury0.39 AUSmallest planet, no atmosphereVenus0.72 AUHottest planet, 465°CThick CO₂ atmosphereEarth1.0 AUOnly known life-bearing planetMars1.52 AURed planet, thin CO₂ atmosphereOlympus Mons, largest volcanoAsteroid Belt2.2–3.2 AUMostly rock + metal fragmentsJupiter5.2 AULargest planet, Great Red Spot95 known moonsSaturn9.6 AURing system, least dense planet146 known moonsUranus19.2 AUIce giant, axial tilt 98°Rotates on its sideNeptune30.1 AUIce giant, strongest windsin Solar System (2100 km/h)Kuiper Belt30–50 AUIcy bodies, Pluto, short-period cometsOort Cloud2000–100,000 AULong-period comets

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