What would an earth-like planet need to have to support life

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Assignment:

Before humans ever ventured into space, we fantasized about visiting-and even living on-other planets. As technology continues to develop, it may one day be possible for humans to call planets other than Earth home. Space scientists have several possible Earth-like planets and moons in sight, but one that is of high interest is Kepler-186f, a planet 500 light years away. It orbits a star much like the Sun, and it orbits in a habitable zone: it is far enough from the star to allow for the pooling of water (if it is present) on the planet's surface.

Is being in a "habitable zone" enough to say the planet is habitable for human life? What characteristics would an Earth-like planet need to have to support life? What challenges would we face traveling to and colonizing Kepler-186f, or other Earth-like planets outside of our solar system? Do you think scientists should spend time looking for Earth-like planets before we have the technology to visit them? Why or why not?

Reference no: EM133876158

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