13 November 2019 Astronomy Chapter 19, 20, 21Chapter 19 (1-11 Even)2. Suppose you have discovered a new cepheid variable star. What steps would you take to determine its distance?4. Which method would you use to obtain the distance to each of the following?6. The meter was redefined as a reference to Earth, then to krypton, and finally to the speed of light. Why do you think the reference point for a meter continued to change?