By mid century, the familiar constellations that guided sailors and storytellers could be drowned in a permanent artificial ...

Star Trek famously referred to space as "the final frontier." Now, it seems set to become the ultimate war zone. A startling new report from the Pentagon has declared space as the "decisive domain" ...

The idea of beaming solar power down from space might sound like science fiction, but it’s being taken seriously by a growing number of governments. A new analysis shows it could significantly lower ...