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some biography about mars:

Named for the Roman god of War, Mars probably got this name due to its red color. It is sometimes referred to as the Red Planet. The name of the month March derives from Mars. Known since prehistoric times, Mars is still a favorite of choice for human exploration.

The density of Mars is about 30 percent less than that of Earth (3.94 g/cm3 vs. 5.52 g/cm3). Its core is probably similar to Earth's, mostly iron, with small amounts of nickel, but spacecraft mapping of its gravity field seem to indicate that its iron-rich core and mantle are a smaller portion of its volume than on Earth. Also, its smaller magnetic field than Earth, indicates a solid, rather than liquid core.

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#1 Mars should be explored because this place has the tallest mountain called Olympus Mons. Mars had the largest and longest dust storms that could cover the entire planet.

#2 The biggest challenges of getting the robot rover in Mars is it's "7 minutes of terror." 7 minutes of terror is when the robot gets to the atmosphere of the Mars. Mars atmosphere is thinner than the Earth atmosphere meaning the parachute will slowdown but it's not enough for the rover to land perfectly. All of the control will shut down, the only thing that they could trust is the parachute and the rocket motor. The rocket motor is going to land the rover on Mars and letting the rocket motor fly away so it wouldn't damage the rover. If there's one wrong in this project everything will crush and fall in small peices.

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#3 Some challenges operating a Robotic pobe on Mars might be on how the weather is their so you wouldn'nt be too hot or too cold.

#4 Some benefits on sending a robotic pobe to Mars might help Earth to learn and get some advice or disconveries on Mars. So its a good thing to sent a robotic pobe.

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I think it might be easy for Earth to hit a target on Mars because first, it haves no people and houses that it can destroy. But however it might be a little hard because the distance from Earth to Mars. 54.6 million kilometers from Earth to Mars. The distance from Earth to Mars might be 401 million km and it will take 115 or more days to get to Mars.

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Scientist found a meteorite fossil landed on Egypt that resemble a chunk of mars, just like the meteorite that was founded in Antarctica means there is possibility that there might be life in early history of Mars.

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I think it may be hard for Mars to get the target to Earth because of how much population there is and the Mars is smaller than the Earth. It will be hard for the people that is moving on Mars because 95% of atmosphere is carbon dioxide.

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It might be uncomplicated because the rocket rover are landed in Mars which give back information back to Earth.

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Their might be life on Mars because How again it is the same things like earth and might have other creatures that humans havent ever known before.

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Mars is of particular interest for the study of the origins of life because of its similarity to the early Earth. This is especially so since Mars has a cold climate and lacks plate or contintenal drift, so it has remained almost unchanged since the end of the period. At least two thirds of Mars's surface is more than 3.5 billion years old, and Mars may thus hold the best record of the prebiotic conditions even if life does not or has never existed there.

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I think there's life on Mars because in the past, Scientists found water on the North and South pole of Mars and hot springs beneath the crust.

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I think that the Mars might have life on it because  due to the planet's proximity and similarity to Earth.