To Colonize Space, We Have to Solve Mental Health
We already know how to build sealed habitats. The harder problem is trusting the people inside them with systems that can kill everyone — the same reason your phone doesn't run on a nuclear battery.
science
To Reach the Stars, We Have to Solve Aging First
Meaningful space travel isn't just an engineering problem. At interstellar distances, it's a biology problem — longevity and radiation repair — and we're not treating it that way.