Gordon Freeman and Alyx Vance stand together as crows fly overhead on promotional artwork for Half-Life 2 - Valve Corporation ...

From ex-presidents in power armor to thinly veiled stand-ins for real-world suits, I rank 12 of the most unhinged public ...

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...