The explosion model expected debris clouds around asteroids and comets.
This led to a well-publicized 1991 prediction that satellites will be found around both types of bodies.
A nearby cluster of vaguely pyramidal objects surrounding some unusual small mounds not commonly seen away from Cydonia has been dubbed the "City".
(See Figure 5.) Two or perhaps three other nearby features are each in its own way mildly anomalous or unique on the planet.
(See Figure 2.) Because it is a three-dimensional "face" and not just a profile, it has been described as the next best depiction of a human face in stone on its (~ 1 kilometer) size scale in the explored solar system after Mount Rushmore in South Dakota.
The immediately surrounding area likewise contains a number of anomalous-looking objects.
One of these is visibility of the coma all around the orbit.
The standard model tries to explain comas by outgassing from a single nucleus as the comet approaches the Sun.
The recent discovery of a second belt of fragments orbiting the Sun in large numbers beyond the orbit of Neptune suggests that planetary explosions into asteroid belts are not rare events on time scales of billions of years. Ovendens proposed name "Krypton") exploded in the outer main asteroid belt, giving rise to C-type asteroids.So some other large-scale fragmentation process seems required.The predicted statistical properties of the orbits of fragments ejected to a great distance from an explosion in the main asteroid belt are well fulfilled by "new" comets.The formation of a small crater seen very close to the base on the shadowed side has apparently thrown debris onto that side of the object, and possibly caused it to split or separate, leading to the ambiguity in the number of original apparent pyramidal faces.Its linear features and sharp angles suggest artificiality to some.