A spaceship is approaching a space station at a speed of 2.10*10^5 m/s. The space station has a beacon that emits green light with a frequency of 5.97*10^14 Hz. What is the frequency of the beacon observed on the spaceship? (To avoid rounding error, carry five decimal places in these calculations and round your answer to four significant figures.) WebAssign will check your answer for the correct number of significant figures. Correct: Your answer is correct. Hz What is the change in this frequency?