95 Worlds and Counting TV - The Universe TV - Fred Singer -
This rock the size of a city is more like a potato than a sphere ... We wouldn’t walk on the surface, we’d float. But you need to be careful. There’s a layer of fine dust a metre deep. Kick it up by mistake and you wouldn’t see a thing. 95 Worlds and Counting, Discovery 2000
Phobos is in a death spiral; it orbits just three thousand seven hundred miles from the Martian surface. Closer to its host planet than any moon in the solar system. The Universe s2e5: Alien Moons, History 2007
If the satellite is indeed spiraling inward as deduced from astronomical observation, then there is little alternative to the hypothesis that it is hollow and therefore Martian made. The big ‘if’ lies in the astronomical observations; they may well be in error. Since they are based on several independent sets of measurements taken decades apart by different observers with different instruments, systematic errors may have influenced them. Fred Singer, Astronautics February 1960