Results 21 to 30 of about 2,458 (231)

Editorial for the Special Issue “Relativistic Astrophysics”

open access: yesUniverse, 2022
Relativistic Astrophysics is the branch of astrophysics that studies astronomical phenomena and celestial bodies, for which classical mechanics and Newton’s law of gravitation are inapplicable to creation of suitable models and we have to generalize ...
Francesco De Paolis   +2 more
doaj   +1 more source

On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments

open access: yesOpen Astronomy, 2015
A new approach to determining the solar galactocentric distance, R0, from the geometry of spiral-arm segments is proposed. Geometric aspects of the problem are analyzed and a simplified three-point method for estimating R0 from objects in a spiral ...
Nikiforov I. I., Veselova A. V.
doaj   +1 more source

The Relative Inertiality - The Relative Mechanical Movement of Bodies in Outer Space [PDF]

open access: yesINCAS Bulletin
Even though classical mechanics states that it is not possible to find an inertial reference frame, relative measurements are used to determine the mechanical behaviour of celestial bodies with very small dimensions compared to the distances between them.
Sorin Stefan RADNEF
doaj   +1 more source

Gamification in studying celestial mechanics using Kerbal Space Program

open access: yesАвіаційно-космічна техніка та технологія
The rapid development of technologies and their implementation in the educational process provide an opportunity to apply gamification, that is, the use of game mechanics and elements for in-depth study of a complex technical discipline.
Pavlo Ponomarenko
doaj   +1 more source

The Proximities of Asteroids and Critical Points of the Distance Function [PDF]

open access: yesSerbian Astronomical Journal, 2010
The proximities are important for different purposes,for example to evaluate the risk of collisions of asteroids or comets with the Solar-System planets.
Milisavljevic, S.
doaj   +3 more sources

Hydrodynamics, Cosmogony, and Cosmology in publications of V. V. Perekhrest: from Planetary Vortices to Galaxies and Dark Energy

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2016
Publications of V. I. Perekhrest with numerous applications of a class of exact vortex solutions to the Euler equations for incompressible media to celestial mechanics, cosmogony, and cosmology, have been studied.
V. L. Borsch
doaj   +1 more source

Titius-Bode’s Relation and Distribution of Exoplanets [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
The distance distribution in our planetary system has been a controversial matter. Two kinds of important issues on Titius-Bode’s relation have been discussed up to now: one is if there is a simple mathematical relation between distances of natural ...
Heon-Young Chang
doaj   +1 more source

Modification of earth's gravity sphere [PDF]

open access: yesTheoretical and Applied Mechanics, 2013
The standard radius of the Earth's gravity sphere is 917.000 km. Here we present that the radius is 1.400.000 km.
Vujičić Veljko A.
doaj   +1 more source

Scrambling‐Enhanced Quantum Battery Charging in Black Hole Analogues

open access: yesAdvanced Science, EarlyView.
By employing a black‐hole‐analog quantum battery constructed from a position‐dependent XY model, its dynamical behavior is investigated through a quench of the scrambling parameter. It is systematically quantified that how the simulated scrambling improves key performance metrics‐namely, stored energy, peak power, and charging time‐thereby offering a ...
Zhilong Liu   +3 more
wiley   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

open access: yesAdvanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame   +4 more
wiley   +1 more source

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