Gravitational wave Gravitational waves can penetrate regions of space that electromagnetic waves cannot They are able to allow the observation of the merger of black holes and possibly other exotic objects in Gravitational Waves Volume Theory and Experiments There is no doubt that gravitational waves are about to be detected Gravity has been steadily moving into the centre of physics for over a decade, and excitement generated by gravitational wave signals would lead to a substantial demand for a graduate level text such as this. A wrinkle in space time confirms Einstein s gravitation A most violent affair The idea of gravitational waves began with Einstein s theory of general relativity, and his realization that gravity was simply the warping of the fabric of space time by massive objects. One Hundred Years of General Relativity From Genesis and One Hundred Years of General Relativity From Genesis and Empirical Foundations to Gravitational Waves, Cosmology and Quantum Gravity Volume Volume Detection of Gravitational Waves Heralds New Era of Science LIGO scientists have announced the direct detection of gravitational waves, a discovery that won t just open a new window on the cosmos it ll smash the door wide open. In a First, Gravitational Waves Linked to Neutron Star Crash The stunning find is already helping astronomers resolve a heated debate about the cosmic origins of gold and silver. Gravitational waves created by black holes in the centre Gravitational waves are small ripples in space time that spread throughout the universe When there is a change in air pressure on Earth, this change moves outwards in the form of sound waves. Einstein s Relativity Astronomy Notes Below is a picture from the Hubble Space Telescope showing the lensing of a background galaxy by a cluster of galaxies in front The distorted blue arcs visible around the center of the picture are the lensed background galaxy If you select the image, an enlarged version will appear courtesy of the Space Telescope Science Institute.The observations of gravitational lensing are now so Speed of gravity Introduction The speed of gravitational waves in the general theory of relativity is equal to the speed of light in a vacuum, c Within the theory of special relativity, the constant c is not exclusively about light instead it is the highest possible speed for any interaction in nature Formally, c is a conversion factor for changing the unit of time to the unit of space. UFO How To UFO unidentified flying object Index saucer I got two books earlier this week and devoured them, very interesting stuff There is a ton of material in the two volumes I have, a huge amount of material.