gravitational deflection

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• Gravitational microlensing — Gravitational Lensing Formalism Strong lensing …   Wikipedia

• Gravitational lens — Gravitational Lensing Formalism Strong lensing …   Wikipedia

• Gravitational lensing formalism — In general relativity, a point mass deflects a light ray with impact parameter b by an angle hat{alpha} = frac{4GM}{c^2b}. A naïve application of Newtonian gravity can yield exactly half this value, where the light ray is assumed as a massed… …   Wikipedia

• Gravitational redshift — In physics, light or other forms of electromagnetic radiation of a certain wavelength originating from a source placed in a region of stronger gravitational field (and which could be said to have climbed uphill out of a gravity well) will be… …   Wikipedia

• Gravitational constant — The gravitational constant G is a key quantity in Newton s law of universal gravitation. The gravitational constant, denoted G, is an empirical physical constant involved in the calculation of the gravitational attraction between objects with… …   Wikipedia

• Gravitational keyhole — A gravitational keyhole, or resonance keyhole, is a small region of space that if an asteroid were to pass through it, its course would be altered due to Earth s gravity in a way that could cause such an asteroid to collide with the Earth on its… …   Wikipedia

• Gravitational tractor — In asteroid deflection, a gravitational tractor is a way to use the gravitational attraction between a spaceship and an asteroid to modify its trajectory to prevent it from colliding with the Earth. In the plan, the spaceship hovers above the… …   Wikipedia

• Gravitational keyhole — Ein Gravitational keyhole (auch resonance keyhole; manchmal als Gravitationsschlüsselloch oder gravitatives Schlüsselloch übersetzt) ist der Bereich im Gravitationsfeld eines Planeten, den ein bahnkreuzender Asteroid passieren muss, um derart… …   Deutsch Wikipedia

• Timeline of gravitational physics and relativity — Timeline of gravitational physics and general relativity* 800s Ja far Muhammad ibn Mūsā ibn Shākir hypothesizes that the heavenly bodies and celestial spheres are subject to the same laws of physics as Earth, unlike the ancients who believed that …   Wikipedia

• Weak gravitational lensing — While the presence of any mass bends the path of light passing near it, this effect rarely produces the giant arcs and multiple images associated with strong gravitational lensing. Most lines of sight in the universe are thoroughly in the weak… …   Wikipedia

• Asteroid deflection strategies — are methods by which near Earth objects could be diverted, preventing potentially catastrophic impact events. A sufficiently large impact would cause massive tsunamis and/or, by placing large quantities of dust into the stratosphere blocking… …   Wikipedia