It is certain that in the future, when humans form colonies on Mars and start life there, the colonists and travelers will have to farm for the food they need. Scientists in the US, who have thought about how to...
This high-resolution image of Io, Jupiter's fifth moon, taken by NASA's Galileo spacecraft was published on December 18, 1997. Io's surface is dotted with hundreds of volcanoes, some of which spew sulfurous plumes hundreds of miles high. converted PNM file
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