Preliminary Examination: Current events of national and international importance Mains Examination: General Studies-III: Science and Technology- developments and their applications and effects in everyday life. What’s the ongoing story: In a rare failure, India’s main rocket PSLV developed problems a few minutes after take-off and failed to place earth observation satellite EOS-09 into the intended orbit in an early morning launch on Sunday. Key Points to Ponder: — What are the Earth observation satellites? Story continues below this ad — What are the different types of launch vehicles of ISRO? — What is the difference between PSLV and GSLV? — What are the various stages of rockets? — Learn about the important ISRO’s missions – Aditya L1, Chandrayaan 4, Chandrayaan 5, Shukrayaan-1 — What do you understand by space debris? Key Takeaways: — “Today’s 101st launch was attempted. PSLV-C61 performance was normal till second stage. Due to an observation in the third stage, the mission could not be accomplished,” ISRO said. — This was the 101st mission launched by ISRO, and the 63rd one using …