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Scientists are trying to get humans Mars. Researchers the U.S. space agency NASA are currently trying to find what kind of plants could grow the red soil on Mars. They hope that astronauts will be able to start growing their own food the Red Planet. The journey to Mars could take to two-and-a-half years. The astronauts will need to take a lot food with them just to last the journey. They will never be able to return to Earth, which means they will need to grow their own fruit, vegetables and other plants seeds. NASA said there could be a problem because Mars doesn't have soil that is good growing things. It just has red dust.

Humans may be their way to Mars the next 15 years. NASA has been testing special "Martian gardens" to see what kind things might grow Mars. They have used a special soil made of crushed volcanic rock. It contains no nutrients or organic material, so it is similar to the soil Mars. The scientists managed to grow lettuce it. They said the lettuce tasted normal, but it had weaker roots and took longer to grow. They will now try growing other vegetables. A NASA spokesman said: "Discoveries made these Earth-based 'Martian gardens' will pave the way future studies and technology development in terms of reliable, efficient food production a long way [Earth]."

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