Human bodies are exquisitely tuned to one world, and it is not a forgiving one. Strip away our technology and even Earth ...
In a new book, NASA astrobiologist Caleb Scharf says the fate of life on Earth may hinge on leaving our planet behind The multibillion-year story of life on Earth is defined by a handful of epochal ...
Gravity and motion make time pass faster on Mars than Earth, reshaping navigation, communication, and future crewed missions.