The glider is the most common example of, for ten points, what objects in Conway's Game of Life which move by returning to their original state but in a different location?
The  rst engineered one of these things made use of the 17c/45 reaction in its construction. One of these was discovered in 2016 with speed c/10 and is known as the copperhead. Flotillae of these things often involve overweight ones which cannot survive otherwise. The four smallest examples of these things include their lightweight, middleweight, and heavyweight types, and if one of these things leaves debris behind, it is known as a pu er. These things can be emitted by   guns, which include a famous example named for Gosper. The glider is the most common example of, for ten points, what objects in Conway's Game of Life which move by returning to their original state but in a different location?
The  rst engineered one of these things made use of the 17c/45 reaction in its construction.
spaceships [antiprompt on gliders and knightships]