Self-replicating entities that have evolved on different planets merge and proliferate exponentially. In search of more energy sources, they consume other stars.
1997
1988
1996
2002
2001
1990
1994
2017
2016
1965
2008
2000
2021
2023
1995
1981
2020
2013
1896
2014
2022
1989
2019
1992
