Celestia Forums

Phobos, the Martian moon, quickly approaches to the surface of the planet due to tidal effect (because Phobos's orbital period is shorter than a Martian day). Only a few hundred million years ago Phobos had to housed almost in a stationary orbit. The probability of formation of Phobos in accuracy in...

I had noticed a strange feature in an arrangement of the planetary orbits, externally reminding the orbital resonances, known already of some centuries http://en.wikipedia.org/wiki/Orbital_resonance . To notice existence of orbital resonances is simply. It is the commensurability of the periods of t...