WHAT IF: Light Speed Were Slower?
Every Wednesday, we’re asking a what-if question – how would our world be different if something were changed? Today’s question is from Life Science: Light is the fastest-moving thing in … Read more
light speed
SPACE: Crossing the Milkyway
The disk of our home galaxy – the Milky Way – is bigger than we previously thought. A new study shows it would take 200,000 years for a spaceship traveling … Read more