From the article, I believe the effects of the radiation are what's being tested. Which is an important thing to know if we want to put people on Mars as it al

From the article, I believe the effects of the radiation are what's being tested. Which is an important thing to know if we want to put people on Mars as it also has a huge amount of radiation and food is heavy to transport. If we can grow plants above ground, that can free up resources for an underground colony.