Lettuce grown in space or on Mars will help human occupation

　　All along, for us, the biggest obstacle to landing on Mars is how to solve the food problem. We all know that Mars is not like the International Space Station. Although ISS same "remote", but the distance between it and the Earth and Mars is quite different compared to. Therefore, if the international space station which food finished
, only when the next shuttle launch to bring some up on the line. Generally speaking, among the astronauts to the International Space Station and other black caviar, canned foods and biscuits food. But for the Mars program, it is clearly not enough, because even if all foods are replaced by hard tack, it is still not enough to eat.

　　So how to solve this problem? Recently, NASA released a groundbreaking progress on this issue. It is reported that in August the time. Expedition 44 spacecraft astronaut Scott Kelly, Kjell Lindgren and Kimiya Yui bred fully grown lettuce out in space, and edible. This universe is the human into a breakthrough, which declared the humans can cultivate vegetables in a microgravity environment. Surprisingly, it's not as root imagine them indiscriminate extension, but regular growth to a specific direction, it should be due to genetic engineering breakthrough achieved.

　　Under microgravity conditions may not be good to cultivate vegetables - of course, you also can think itself is not tasty vegetables. But for the astronauts, they may not have the opportunity to picky eaters. To be able to survive a long time in space, the only thing they can do is to eat all the food you can find.