Quasars, discovered in 1963, are extremely distant massive black holes (MBHs) whose gravity pulls in immense amounts of nearby matter.24 The potential energy of all that infalling matter is converted to bright radiation, making quasars the most luminous stable objects in the universe. (creationscience.com)
All you need to perform this bodyweight exercise are to parallel bars, or two stable objects with identical height that are close together. (fitnessandpower.com)
In low - light situations, use a higher ISO and steady the camera on a desk or some other stable object to help reduce shake. (moneysense.ca)