When a kicker kicks the football down field, what is he calculating?
Learn how Ole Roemer learned that light does take time to travel.
Eagle's have very different vision compared to humans.
Have you ever seen pictures of the sun and wondered what those dark spots were? They're sunspots!
How fast does light travel? What could you do to find out? One natural thing to try is to have someone send some light your way and see how long it takes to reach you. How about if you got a friend to shine a flashlight at you from a distant hill, exactly at midnight? With your stopwatch you start counting the seconds until you see the light. Learn more on this Moment of Science.
Drop two objects of different mass, say a bowling ball and a golf ball, from a high building. Which hits the ground first? Learn more on this Moment of Science.