When an object in space appears to be racing at nineteen times the speed of sound, it instantly jumps from routine data point to global headline. The claim that NASA tracked such a hyperfast visitor ...

Using ultra-fast laser pulses and special cameras, scientists have simulated an optical illusion that appears to defy Einstein's theory of special relativity. One consequence of special relativity is ...

Many of the nation’s fire departments and rescue squads provide technical rescue services to their respective communities. Working in the world of rescue, a member understands that rescue is the ...

As Superman flies over the city, people on the ground famously suppose they see a bird, then a plane, and then finally realize it's a superhero. But they haven't just spotted the Man of Steel—they've ...