WHAT IF: Sound Traveled As Fast As Light?
Every Wednesday, we’re asking a what-if question – how would our world be different if something were changed? Today’s question is from Live Science: What if the speed of sound … Read more
light
SPACE: How Black Holes bend Light and Spacetime
When two orbiting supermassive black holes get close to each other, the results can be pretty twisted. A new NASA visualization shows how the irresistible pull of extreme gravity bends … Read more
Physicists Break the Rules of Light
Physicists have built a ring in which pulses of light whip circles around each other and the normal rules that govern light’s behavior no longer apply. Under normal circumstances, light … Read more
SPACE: A Second Moon Could Soon Hang Over China
Moonlit skies over the Chinese city of Chengdu may soon get a boost from a second moon. City officials recently announced plans to build an artificial moon, launching it to … Read more
SCIENCE: How to Stop Light
Light moves fast. That’s kind of the whole point of light, at least the way most people think about it. Light shoots through the 93 million miles between Earth and … Read more