Definition: Proba-3 is a European Space Agency (ESA) mission developed with ISRO collaboration to study the Sun’s corona using two satellites flying in precise formation to create an artificial solar eclipse.

Time Period: Launched in 2024.

Key Facts: Uses formation flying with millimetre precision; studies solar corona.

UPSC Prelims Pointers: First precision formation-flying solar mission.

PYQ: 2023 (Solar missions context)