Introduction

This week on planetary radio, welcome. I cannot begin this week's episode without acknowledging the terrible and fast loping news coming from ukraine. Casey dryer and i will open the march fourth space policy edition of planetary radio with a discussion of how space exploration and development have already been touched by this tragedy. Astrophysicist and science writer catlan rasmason has written a terrific article for our webside about spectroscope which may some day soon reveal signs of life on a distant world.