Learn how Ole Roemer learned that light does take time to travel.
Venus may appear to glow under moonlight but the planet also glows in infrared light.
There is no place on the moon that is completely dark. Learn why!
Why does the corner of the room, where two walls and the ceiling meet seem to show two different wall colors?
Solar panels can only capture so much sunlight and produce a limited amount of electricity. What are the other options for sustainable energy?
Spiders have been found to decorate their webs with special ultraviolet-reflecting silk in flower-like patterns.
Astronomers have found a planet with water known as HD 189733b.
Animals have mastered blending in with their surroundings. Yet, why do some animals have lighter fur on their bellies than on their backs?
You're driving along at night and suddenly you're blinded by light. You flick the tab on your rear-view mirror... what happens next?
Have you seen cars with headlights that appear blue?