Voyager 1 is on a journey that will outlast civilizations, outlive the Sun’s familiar neighborhood, and eventually drift into ...

The curious minds at What If explore the possibility of an alien civilization existing on Proxima b, imagining how they might live, communicate, and interact with humanity. Iran makes new offer on ...

Laser sail propulsion is an idea that won't go away. By aiming powerful Earth-based lasers at tiny spacecraft with light sails, tiny spacecraft can be accelerated to near-relativistic speeds without ...