What are future Martians going to wear under their spacesuits? This week, I sat down with Dr. Karl Aspelund—designer, anthropologist, and member of the 100 Year Starship Project—to explore how comfort, sustainability, and culture will shape Martian fashion. From serious science to celebratory clown costumes, we imagine what daily life on Mars might look like one layer at a time. Trust us, you’ll never think about underwear and space the same way again.