In 2015, a piece of equipment at an observatory in the US moved one quintillionth (10-18) of a meter. This tiny movement was ...

For instance, the gravitational force of the sun is a centripetal ... the circle — this is the centrifugal force. A simple real-life example of centripetal force is a rock tied to a string.

Related: 8 Ways You Can See Einstein's Theory of Relativity in Real Life But gravitational waves from ... for this mysterious burst, too. For example, a supernova could have directly collapsed ...

So it looks like we'll be talking a lot about gravitational ... to force the surface back down, while the water's buoyancy pushes it back up. Wind-driven waves, tides and tsunamis are all examples ...

Gravitational forces differ on the sides of the moon nearest and farthest from the planet, and their strength changes during the course of the satellite’s orbit. This creates internal friction ...