Orbit of the Moon. The Moon orbits Earth in the prograde direction and completes one revolution relative to the stars in approximately 27.323 days (a sidereal month). Earth and the Moon orbit about their barycentre (common center of mass), which lies about 4,600 km (2,900 mi) from Earth's center (about 34 of the radius of Earth). On average, the Moon is at a distance of about 385,000 km (239,000 mi) from Earth's centre, which corresponds to about 60 Earth radii.
The Method of Loci is an effective mnemonic device, or a trick to aid in memory storage and retrieval. The effectiveness of the Method of Loci relies on visualizing mental images to associate with the material that needs to be remembered. The more vivid the visual, the more effective the method.
repÂ·liÂ·caÂ·tion. n. 1. a. The act or process of replicating something. b. Biology The process by which genetic material, a single-celled organism, or a virus reproduces or makes a copy of itself. c. In scientific research, the repetition of an experiment to confirm findings or to ensure accuracy.d. A copy or reproduction: a replication of a famous painting.epÂ·liÂ·caÂ·tion. n. 1. a. The act or process of replicating something. b. Biology The process by which genetic material, a single-celled organism, or a virus reproduces or makes a copy of itself. c. In scientific research, the repetition of an experiment to confirm findings or to ensure accuracy.