A solar sail is no longer just a graceful idea for propellant-free flight; it is becoming a materials and deployment problem that engineers are finally learning how to solve. That shift matters ...

What would it take to accelerate to Interstellar space by a NASA spacecraft deliberately, within a time that is short enough that the people who designed it and studied it will be available to analyze ...

By taking advantage of a maneuver that would see a spacecraft fire rocket engines while in the solar corona, that spacecraft’s velocity could receive a huge boost — enough to allow it to catch up with ...

Green Bank Telescope rules out alien signals in interstellar comet 3I/ATLAS after rigorous scientific deep search.