Mars: the Red Planet, the forth planet from the Sun., Spacecraft: A spacecraft is a vehicle or machine built to fly and work in outer space, Rover: a robotic space vehicle designed to explore rough terrain on planets or moons., Terraform, Terraform: to transform (a planet, moon, etc.) so that it is suitable for supporting human life, Colonize: to take control of a foreign area or country, often by force, and send citizens from the home country to settle and govern the new land., Inhospitable, Inhospitable: A place that can’t sustain human life, Asteroid: An asteroid is a small, rocky object that orbits the Sun like a planet, but is much smaller., Bombard, to attack, hit, or overwhelm someone or something continuously with heavy force, objects, questions, or a stream of particles., Radiation, a form of energy that comes from a nuclear reaction and that can be very dangerous to health, a mass of dust and sand that has been lifted from the ground in very dry areas such as deserts and that is carried by the wind, Toxic, a substance that can make people or animals ill or kill them if they eat, drink or touch it

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