Constellation

Also see: Stable constellations

A constellation is any pattern that comprises only simple objects, such as still lifes, oscillators and escaping spaceships. Spaceships are frequently considered not a part of the constellation proper.

The constellation that results from the R-pentomino at generation 1103 has 116 cells

A constellation that has evolved from a soup, a methuselah, a single reaction or another such burst of activity is known as ash. The final state of such evolution is either:

• An empty space when every cell died.
• A constellation of still lifes, oscillators and diverging spaceships. A methuselah's lifetime is computed when the number of cells stabilizes as a fixed number, or a periodic one, and no collision may occur.
• Or one or more regular infinitely growing object (such as the Gosper glider gun or the block-laying switch engine), possibly with accompanying finite objects.

Constellations are named after a night sky's observation, where some stars seem to be grouped haphazard and never move: even a shooting star won't rearrange the overall look.

The familiar fours

The familiar fours are commonly seen (components of) constellations in Life that are made of four identical objects each:

• The traffic light, a constellation of four blinkers
• The honey farm, a constellation of four beehives
• The blockade, a constellation of four blocks
• The fleet, a constellation of four ships (or: two ship-ties)
• The bakery, a constellation of four loaves (or: two half-bakerys)

See also

• List of constellations

External links

• Constellation at the Life Lexicon