https://www.pcgamer.com/next-stellaris-update-will-overhaul-anomalies-and-add-multi-star-systems/

Stellaris, which we chose as one of the best strategy games on PC earlier this month, will overhaul the way that anomalies work in an upcoming update and introduce multi-star systems for the first time, developer Paradox Interactive has announced. The 2.1 update, called Niven, will remove the chance of failure when researching anomalies, which are points of interests on planets that can grant bonuses when investigated.

At the moment, researching anomalies has a chance to fail based on the skill level of your scientists, but Paradox says that the system adds "little to the game in terms of interesting choices", and simply encourages players to put off researching anomalies until later. After the Niven update, researching anomalies will always be successful, but the time it takes to investigate them will be heavily dependent on the level of your scientist relative to the anomaly level.