Why chili peppers? Because they are high in Vitamin-C, do not need extensive processing and are spicy. Astronauts need such types of foods as their sense of smell and taste gets affected after living for long periods of time in microgravity, the report quotes PH-04 principal investigator Matt Romeyn.
As per Romeyn, growing colourful plants and vegetables in space has helped the astronauts and improved their sense of well being. Their colours and smells have got something to do with that, believes the principal investigator.
The whole experiment was launched by NASA astronaut Shane Kimbrough, who is said to be one of the astronauts responsible for growing and eating lettuce– the “Outredgeous” red romaine lettuce–on the ISS in 2016. It looks like growing vegetables in space could make the astronauts happier as they have to spend months aboard the space station usually.