ISRO will launch the European Space Agency's Proba-3 mission on December 4 at 4:08 pm from Sriharikota using the PSLV-XL rocket. The twin satellites will be placed in a highly elliptical orbit, reaching up to 60,000 km from Earth. Their solar coronagraph will enable precise study of the Sun's faint corona, enhancing understanding of solar activity and space weather.