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A tale of 2 planets: Venus & Mars - Coggle Diagram
A tale of 2 planets: Venus & Mars
Venus, The Hothouse Neighbor
Shrouded in a thick atmosphere of scorching gases, hottest planet. Temperatures exceeding 860˚F (460˚C), enough to vaporize metals.
Behind extreme heat = a runaway greenhouse effect. Clouds of CO2 trap the sun's rays → continuously bake. Lacks the cooling effect of oceans, further amplifying the heat.
Similarities with Earth: the same size & density, may have possessed oceans in the distant past.
Mars: The Red Frontier
A desolate, cold world with a thin atmosphere.
The Martian surface: canyons, volcanoes, & polar ice caps.
Mars once possessed flowing water, with ancient riverbeds and lakebeds hinting at a wetter past. → A prime target in the search for extraterrestrial life, as water = essential for life
Its reddish hue comes from iron oxide, commonly known as rust, coating the Martian landscape.
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Comparing and Contrasting
Temperature
Venus is a scorching inferno (462°C), while Mars is a frigid desert(-63°C). Both planets may have possessed oceans in the past, suggesting a more hospitable environment for Venus & a wetter past for Mars.
Surface + Atmosphere
Both Venus & Mars are terrestrial = rocky like Earth. However, Venus suffocates in a thick, toxic atmosphere, while Mars struggles to hold onto its thin, frigid air.
Rotation
Venus has an incredibly slow rotation period, taking 243 Earth days to spin.
While Mars rotates in about 24.6 hours, more similar to Earth but still slower. Venus also has a retrograde rotation, which means it spins in the opposite direction compared to most other planets in the solar system, including Earth.
Magnetic field
Both have weak magnetosphere Venus: 12,104 kilometers(7,520miles) Mars: 6,779 kilometers(4,217miles)
Moons
Mars has 2 small, irregularly shaped moons, are thought to be captured asteroids. Much smaller than our own moon & have a potato-like shape. Venus doesn't have any.
