As a result, any object in free fall near Earth's surface accelerates at 9.81 m/s/s. The gravitational force acting on an object is not always equal to its weight. A free falling object experiences a ...

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 ...

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 ...