A mosaic of three separate images taken by Viking 1 on October 19, 1978. The large crater (mostly in darkness) on the upper left is Stickney.

Phobos is the largest and the closest of the two Martian moons. It orbits above the Martian surface at an altitude of 9,377 km (5,823 mi).

Physical characteristicsEdit

Phobos is one of the least-reflective bodies in the solar system. Spectroscopically it appears to be similar to the D-type asteroids,[1] and is apparently of composition similar to carbonaceous chondrite material.[2] Phobos' density is too low to be solid rock, however, and it is known to have significant porosity.[3][4][5] These results led to the suggestion that Phobos might contain a substantial reservoir of ice. Spectral observations indicate that the surface regolith layer lacks hydration,[6][7] but ice below the regolith is not ruled out.[8]

Colonization ProcessEdit

It would be a good idea to colonize the two Martian moons before we think about colonizing or terraforming Mars. Phobos and Deimos would be the primary outposts/Space Stations before we take the next big step of terraforming Mars. We may even have to use these two captured asteroids to put water onto Mars, this would involve pulverizing the moons so their usefullness as outposts would end.

Paraterraforming Phobos?Edit

Dome habitat structures could be built in the large craters of the moon, which would hold a pressurized atmosphere and trap heat when greenhouse gases, as well as nitrogen and oxygen, is added.
Phobos terraformed realistic version by master bit-d5owx8z

A Paraterraformed Phobos, by Master-Bit.


  1. Template:Cite web
  2. Template:Cite book
  3. Template:Cite web
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  5. Busch, M. W.; et al.; 2007; Arecibo Radar Observations of Phobos and Deimos, Icarus, Vol. 196, pp. 581-584
  6. Murchie, S. L., Erard, S., Langevin, Y., Britt, D. T., Bibring, J. P., and Mustard, J. F., "Disk-resolved Spectral Reflectance Properties of PHOBOS from 0.3-3.2 microns: Preliminary Integrated Results from PHOBOS 2," in Abstracts of the Lunar and Planetary Science Conference, volume 22, page 943, (1991)
  7. Template:Cite journal
  8. Fanale, Fraser P., "Water regime of Phobos" (1991).

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