Frames of reference

Astronomy portal

Here is a list of articles in the Frames of reference category of the Astronomy portal.

In physics, a frame of reference is often a useful way of defining a particular state of motion, the expected properties of a set of objects with a common state of motion, or how physics may appear to an observer with a state of motion. It is usually used to define a coordinate system that can be used as a reference for measurements and observations.