The article, " Are Children Like Werewolves? Full Moon and Its Association with Sleep and Activity Behaviors in an International Sample of Children " by Chaput et al. (1) was quite fascinating and thought-provoking. However, there is a potential flaw in their research – and perhaps in all the medical literature on this subject. Curiously, the study found a small but measurable difference in sle...

In this work, the orbital evolution of these objects that are located in geostationary orbit (GEO) is analyzed. Knowing this, possibility using a solar sail considered to help clean space environment. The main natural environmental perturbations act debris dynamics. Such forces acting can force growth eccentricity GEO orbit. Several authors have presented models radiation pressure considering s...

The pericenter advance of a test body by a central mass is one of the classical tests of General Relativity. To day this effect is measured with radar ranging by the perihelion shift of Mercury and other planets, in the gravitational field of Sun, with a relative accuracy of the order of 10–10. In this paper we explore the possibility of a measurement of the pericenter advance in the gravitatio...

In this letter we propose a new observable for measuring the general relativistic Lense–Thirring effect with artificial satellites in the gravitational field of the Earth. It consists of the difference of the perigee rates of two satellites placed in identical orbits with supplementary inclinations. As in the well known LAGEOS–LARES project in which, instead, the sum of the residuals of the nod...

The Lense-Thirring effect is currently being measured by means of a combination of the orbital residuals of the nodes of LAGEOS and LAGEOS II and the perigee of LAGEOS II. The claimed total error should be of the order of 20%. The most insidious systematic error is due to the mismodelled even zonal harmonics of the geopotential and amounts to 12.9%, according to the full covariance matrix of th...

Several non-functional objects are orbiting around the Earth and they called space debris. In this work, we investigate process of debris mitigation from GEO region using a solar sail. The acceleration induced by radiation pressure (SRP) is most relevant perturbation for in orbit with high area-to-mass ratio (A/m). We consider single-averaged SRP model Sun an elliptical inclined orbit. addition...

The Lense-Thirring effect is currently being measured by means of a combination of the orbital residuals of the nodes of LAGEOS and LAGEOS II and the perigee of LAGEOS II. The total error is of the order of 20%. The most insidious systematic error is due to the mismodelled even zonal harmonics of the geopotential and amounts to 12.9%, according to EGM96 model. The role and the importance of the...

the argument of order is the most simple, common and affective argument in theism. due to its generality, or the wide range of the presenters and the addressees of this argument which almost cover all human beings, it has some inaccuracies in its explanation, understanding , and its main claim; this is to an extent that some improper doubts has been posed about it. professors motahhari and java...