Ever wonder how baseball players react in time to catch a line drive traveling ninety miles an hour? Find out how they do it on this Moment of Science.
You’re out on a clear, starry night with your best friend, looking for shooting stars. Look, there’s one, your friend shouts, but by the time you look, it’s gone. There’s another, she cries. Too late, you missed it. Then one comes along that seems to just amble across the sky, nice and slow. Why is it that some shooting stars are so fast and others are much slower? Learn more on this Moment of Science.
Is it true that running a mile and walking a mile burn about the same number of calories?
We’ve been imagining that we’re sitting in a geostationary satellite. That’s a satellite that orbits the equator at the same speed and direction as the earth turns. That means it’s always over the same spot of land, as if it were floating in the sky 22,500 miles up. We let down a rope to pull up some supplies. Will this work? Learn more on this Moment of Science.
A geostationary satellite orbits the equator in the same direction and speed the earth turns. That means the satellite stays stationary with respect to the ground. It seems to be hanging in mid-air, if by mid-air, you mean 22,500 miles high. Learn more on this Moment of Science.
Could you escape a falling elevator by simply stepping out? Learn more on this Moment of Science.
As your car rapidly decelerates, you feel yourself pushed up against the wheel. Why? Learn more on this Moment of Science.
Does a ball being carried on a moving skateboard have forward momentum? Learn more on this Moment of Science.
Why do horses have skinny legs? Find out on this Moment of Science.
Enjoy star gazing?Then this Moment of Science is for you!