In an effort to discover how food behaves in the vacuum of space, NASA scientists subjected a number of veggies to a sudden vacuum and recorded their findings. The result was that the vacuum had basically no effect on 20-day old radish, lettuce and wheat plants. In fact, the plants continued to grow normally until they were harvested one week later. This means that an astronaut’s lunch would survive should it be exposed to space. The human – not so much.