Conway's Game of Life: Part 4 (Gliders, Spaceships and the Speed of Light)

Name that pattern! Try the short quiz on Still Life and Oscillators. How observant are you at spotting exciting new configurations? Try your skill!!
The family of (simple) Spaceships is introduced. What does the speed of a Spaceship mean? A formula is introduced with two examples of calculations given. The concept of "the speed of light" in the context of Conway's Game of Life is discussed.
The Game of Life is an example of a Cellular Automaton. Cellular Automata are studied in Mathematics, Computer Science, Physics and Theoretical Biology. The Game of Life was invented by the British mathematician John Horton Conway in 1970 and first published in the Scientific American Mathematical Games column written by Martin Gardner.
Glider; Lightweight Spaceship (LWSS); Middleweight Spaceship (MWSS); Heavyweight Spaceship (HWSS); diagonal; orthogonal; Speed = Distance / Time;
Other titles in this series are:
Conway's Game of Life: Part 1 (a gentle introduction / tutorial / explanation)
https://youtu.be/484FWxvO-Ro
Conway's Game of Life: Part 2 (Gliders, Crashes & Still Life)
https://youtu.be/gIRBuHkVcLc
Conway's Game of Life: Part 3 (Order from Chaos)
https://youtu.be/ASj3gDEirqY
Conway's Game of Life: Part 5 (Gosper's Gilder Gun - A Fantastic Tale of Discovery)
https://youtu.be/i6suvH2TvHg
Conway's Game of Life: Part 6 (A Chronology of Spaceship Discoveries - Glider, LWSS, 25P3H1V0, etc)
https://youtu.be/5yLcsaewxJQ