How did the mars venus and saturn habitable
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Answer:
What if Mars and Venus had habitable conditions and had humans. ... There would certainly be much more pressure for manned interplanetary travel in an alternate solar system where all three of the planets in or near our sun's circumstellar habitable zone were not only habitable but inhabited by humans.
Explanation:
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Answer:
Venus has a surface pressure of 91atm, a surface temperature of 465 ⁰C, and the length of a day at Venus extends to 116.5 Earth days, so its certainly not habitable to Earth lifeforms.
Mars has a surface pressure of 0.00628atm (159 times less than that of Earth), an average temperature of -62.78⁰C, and the atmosphere consists of mostly CO₂, and some water vapour. After the Earth, Mars is the most habitable planet in our solar system. Its soil contains water to extract. It isn't too cold or too hot, and the gravity on Mars is 38% that of Earth's, which many believe is sufficient for the human body to adapt to. The Martian surface was eminently habitable in the ancient past, featuring lakes, rivers and even a huge ocean. But things changed dramatically after the planet lost its global magnetic field about 4 billion years ago. Charged particles from the sun began stripping away Mars' once-thick atmosphere, eventually reducing it to a thin layer that cannot keep much heat in or UV radiation out. The surface became extremely cold and dry as a result. So we’re still a long way from making viable self-sufficient habitats on Mars.
Saturn is a gas giant; it's interior is most likely composed of a core of iron–nickel and rock (silicon and oxygen compounds). Its core is surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and finally a gaseous outer layer. Its surface pressure is 1.38atm and its gravity is 1.065 times that of Earth. it is currently an inhabitable planet due to its gaseous structure.