The illusion was obtained with artificial moons viewed against a luminous ceiling, and also with an imaginary ceiling induced by first showing a luminous ceiling and then removing it before the moons were introduced.

  According to the Titus-Bode law, orbits of planets in the solar system obey a geometric progression. Many investigations have been launched to improve this law. In this paper, we apply square and exponential models to planets of solar system, moons of planets, and some extra solar systems, and compare them with each other.

The paper provides the current understanding of the dust particle dynamics near the surface and in the circummatrian space of the Martian moons based on existing models developed for airless and nonmagnetized bodies. In particular we discuss the response of the regolith of the Martian moons to exposure to radiation, the dynamics of charged dust on their surfaces, their plasma environments, the ...

1Department of Spinal Surgery, Pars Advanced and Minimally Invasive Manners Research Center (PAMIM), Pars Hospital, Tehran, Iran 2Adventist Hinsdale Hospital,120 N Oak St, Hinsdale, IL 60521, USA *Corresponding author Abolfazl Rahimizadeh, MD Department of Spinal Surgery Pars Advanced and Minimally Invasive Manners Research Center (PAMIM) Pars Hospital, Tehran, Iran Tel. + 98 912 322 61 49 E-ma...

the byzantine art belogs to the world of christianity. the world of christianity has some characteristics which generally reflect the art works belonging to the christian era. any interpretation, critic and studies of the byzantine era art is possible only if it is done on the basis of knowing the world it belongs to. the core of chritian world is the sacred writ and the divine words. the adven...

Jupiter and Saturn have extended, nearly toroidal atmospheres composed of material ejected from their moons or rings. Here we suggest that similar atmospheres must exist around giant extrasolar planets and might be observable in a transit of the parent star. Observation of such an atmosphere would be a marker for the presence of orbiting debris in the form of rings or moons that might otherwise...