On Episode 210 of This Week In Space, Rod Pyle and Tariq Malik talk with Dr. Robert Lillis of the Mars ESCAPADE mission.
Poor Mars. After a warm, wet childhood, the planet dried out and became cold and arid. And why? Mostly because it lost most of its atmosphere, scraped away by solar radiation. NASA's Maven mission studied the phenomenon of atmospheric loss for years, but has now gone silent.
