Our motion perception is remarkably well tuned to detect small changes in speed and direction. For example, soccer goalkeepers need to precisely judge the speed, direction, and curvature of an ...

Take off: free-falling atoms were tested in this 'zero-G' aircraft operated by Novespace. (Courtesy: Novespace) “Weightless” experiments that compare the gravitational acceleration of two different ...

The MICROSCOPE mission tested the weak equivalence principle with free-falling objects in a satellite. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Why study physics, you ask? Scroll down, friend. This video of a guy rolling through a 360-degree vertical loop at a skatepark—cool as ice, with no helmet—is answer enough. Clearly, his understanding ...

The simultaneous drop of two dissimilar masses is one of the oldest experimental results. But as Jon Cartwright reports, new techniques may show that not everything falls the same way In sync.