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the red planet
the planet mars, often known as 'the red planet', can be seen from earth (0) night sky without a telescope. its size and brightness varies greatly according to (13) . countless books have been written (14) . it has always held a fascination for people who are interested in the possibility of life on other planets.
until the first spacecraft visited mars in 1965, it (15) that there was water on the planet. but photographs sent back to earth did not support (16) .
although astronomer phelps stated in 1895 that 'conditions are all favourable for life', the truth (17) the planet mars would be unsuitable for human habitation, not (18) to a lack of water, but also (19) the cold temperatures and high winds. therefore, the possibility of humans (20) on the red planet in the (21) is unlikely.
it is possible, (22) there was life on the red planet in the past. signs of riverbeds have been found -now dried up, but perhaps they (23) water. and where there's water, there is always the possibility of life. more research will be carried (24) future missions to mars
0) In
13)he
14)about
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