A byproduct of aging nuclear weapons stockpiles could help power spacecraft on missions lasting decades. Americium-241, an ...
A cluster of recent theoretical papers has laid out mathematical frameworks for propelling spacecraft at speeds ranging from ...
NASA should focus on the body and mind, not just engineering, for cosmic travel. Scott Solomon is a biologist and professor at Rice University and the author of “Becoming Martian: How Living in Space ...
Deep space is far away. Really far away, and getting there quickly with conventional chemical rockets is like trying to cross an ocean in a rowing boat, technically possible but painfully slow and ...