Science
Planets & Moons of Our Solar System
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Body↕ | Type↕ | Orbits↕ | Diameter (km)↕ | Why It's Fascinating↕ |
|---|---|---|---|---|
Earth | Rocky Planet | Sun | 12,742 | The only known life-bearing world, 71% water, perfect goldilocks zone, pale blue dot, our everything |
Mars | Rocky Planet | Sun | 6,779 | Red Planet, Olympus Mons (tallest volcano), Valles Marineris canyon, Perseverance rover, Elon's obsession |
Jupiter | Gas Giant | Sun | 139,820 | Could fit 1,321 Earths inside, Great Red Spot storm (400 years!), 95 moons, protects Earth from asteroids |
Saturn | Gas Giant | Sun | 116,460 | Those RINGS (ice and rock, only 10m thick), would float in water (less dense), hexagonal polar storm |
Europa | Moon | Jupiter | 3,122 | Ocean under ice shell, more water than Earth's oceans, best candidate for alien life, NASA Europa Clipper mission |
Titan | Moon | Saturn | 5,150 | Thick atmosphere (only moon with one), methane lakes and rain, Dragonfly drone mission, potential prebiotic chemistry |
Venus | Rocky Planet | Sun | 12,104 | Earth's evil twin, 900°F surface, sulfuric acid clouds, rotates backwards, once had oceans (maybe) |
Mercury | Rocky Planet | Sun | 4,879 | Closest to Sun, 800°F days / -290°F nights, iron core is 85% of its radius, shrinking as it cools |
Neptune | Ice Giant | Sun | 49,528 | 2,000 km/h winds (fastest in solar system), beautiful blue from methane, dark spots come and go |
Uranus | Ice Giant | Sun | 50,724 | Tilted 98° (rolls around the Sun), diamond rain inside, 27 moons named after Shakespeare characters |
Enceladus | Moon | Saturn | 504 | Shoots water geysers into space, subsurface ocean, organic molecules found, tiny but a top alien life candidate |
Io | Moon | Jupiter | 3,643 | Most volcanically active body in solar system, 400+ volcanoes, tidal heating from Jupiter, hellscape surface |
Pluto | Dwarf Planet | Sun | 2,377 | Demoted in 2006 (still controversial), heart-shaped glacier (Tombaugh Regio), New Horizons flyby was emotional |
Ganymede | Moon | Jupiter | 5,268 | Largest moon in solar system (bigger than Mercury), own magnetic field, subsurface ocean, JUICE mission target |
The Moon (Luna) | Moon | Earth | 3,474 | Controls our tides, 12 humans walked on it, 'giant impact' origin theory, Artemis is going back |
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