An Imaginary line that RUNS THROUGH THE MIDDLE OF AN OBJECT AROUND IN WHICH THE OBJECT ROTATES.

TO TURN OR SPIN AROUND A CENTRAL POINT OR AXIS.

TO MOVE IN A CURVED PATH OR ORBIT.

THE STAR IN THE CENTER OF OUR SOLAR SYSTEM AROUND WHICH EARTH AND SEVEN OTHER PLANETS REVOLVE.

A BODY THAT ORBITS A PLANET A NATURAL SATELLITE.