The Radial Velocity Method is a technique used in astronomy to detect exoplanets by observing the motion of stars. When a planet orbits a star, its gravitational pull causes the star to wobble slightly. This wobble affects the star's light spectrum, causing it to shift towards the red or blue end of the spectrum, known as the Doppler effect.
By measuring these shifts in the star's light, scientists can determine the presence of a planet, its mass, and its orbit. This method has been instrumental in discovering many exoplanets, contributing significantly to our understanding of planetary systems beyond our own, including those around Kepler and TESS.