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

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

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