Those tiny dots are actually blood cells moving in the retina of your eye.
Scientists have found evidence that plants can sense the presence of neighbors that might cast shadows on them at some future time.
Black holes were always the most dangerous thing when traveling through space in science fiction shows. What are black holes and how do they form?
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.