Anomaly
Anomaly (exploration) in the Stellaris encyclopedia: An Anomaly is a mysterious discovery found by Science Ships during Systems surveys. Investigating one may yield rewards or uncover dangers.
Anomaly in the game's words
The encyclopedia entry as the game shows it in its tooltips; underlined words open their own entry or page here.
An Anomaly is a mysterious discovery found by 
Science Ships during 
Systems surveys. Investigating one may yield rewards or uncover dangers.
Anomalies are studied by assigning a 
Scientist to them, with investigation time depending on their skill level and the difficulty of the Anomaly.
They appear on the 
Galaxy Map when a Science Ship is selected, and are listed in the Situation Log tab of the Situation Log View.
Entries that mention Anomaly
More in Exploration
Source: common/game_concepts (concept_anomaly, also concept_anomalies) and localisation/english, Stellaris Cygnus v4.5.2 (9776).