What Is the Grandfather Paradox? By Greg Uyeno If time travel is possible, it must avoid the contradiction of the grandfather paradox.
Event Horizon Telescope: An Earth-Size Black Hole Camera By Greg Uyeno The Event Horizon Telescope produced the first-ever image of a black hole.
NASA Peers Into the Eye of a 'Super Typhoon' (Photo) By Greg Uyeno Imaging technologies show a storm in a different light.
Wow! Northern Lights Glow in Breathtaking Image from Space Station By Greg Uyeno The northern lights and an impact crater were captured in a single image taken by an astronaut aboard the International Space Station.
