Infrared-to-visible albedo ratio of Phobos: Comparison with primitive asteroids
The episode discusses a paper comparing Phobos' infrared-to-visible albedo ratio across its Blue, Transitional, and Red surface units to primitive asteroid classes. Using Mars Express OMEGA data and asteroid catalogs, they find Red and Transitional units match D/T-type asteroids, while Blue unit is closer to dark X/P-types, supporting a primitive, possibly captured origin.