From marinas to boat dealers to boat owners, we have the capabilities to get the job done right. Our on-site inspection, repair and restoration of leather, vinyl, fabrics and plastics will save you time and money (sometimes as much as 90% of the cost of replacement).
What is the Black Knight satellite? It is a mysterious satellite, of unknown origin, discovered in 1960 which shadowed Sputnik. It is believed to have been of extraterrestrial origin, and signaled back old radio waves from the 1920s and 1930s before it disappeared.
In this period more general black hole solutions were found. In 1963, Roy Kerr found the exact solution for a rotating black hole. Two years later, Ezra Newman found the axisymmetric solution for a black hole that is both rotating and electrically charged.