In an attempt to 'terraform' or 'green' the bleak, red terrain of Mars, Nasa will probably attach a tiny greenhouse to its next rover which will be launched in 2020. The Mars Plant Experiment, MPX, seeks to study how plants respond to low gravity as opposed to zero gravity. More important, can they survive the onslaught of cosmic particles unhampered by an atmosphere? The small cube-shaped greenhouse filled with carbon dioxide will contain seeds of a mustard-kind of plant, Arabidopsis.
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