Editorial Cloze Test Quiz
After 39 consecutive successful launches, the Indian Space Research Organisation had almost made it appear that launching satellites was _______(1)________child’s play when it used its workhorse rocket, the Polar Satellite Launch Vehicle. But the PSLV, which has been placing satellites in their respective orbits for the past 24 years, faced a setback on August 31. The PSLV-C39 rocket ______(2)_______the eighth satellite of the Indian Regional Navigation Satellite System (IRNSS) had a normal lift-off and flight events but ended in an unsuccessful mission. The heat-shield failed to separate, resulting in the satellite separation occurring within the shield. This is just the second ______(3)________when the PSLV has had an unsuccessful mission in all of its 41 launches; the first setback was back in 1993. ______(4)_______the years, the PSLV has played a pivotal role in ISRO’s programme, and this February it set a world record by launching 104 satellites in one go. With such an enviable track record, the failure of the mission this time almost comes as a surprise. This is especially so as the lift-off and the stage separation of the first and second stages, which are the most challenging parts of the mission, went off smoothly. In comparison, the heat-shield separation is a relatively minor operation which takes place once the rocket crosses an altitude of 100-110 km, and the temperature in the absence of the heat-shield will no longer damage the satellite. The failed mission serves as a reminder that utmost care and scrutiny are required before every single launch. While scientists are working to identify the ______(5)_______of the anomaly in the heat-shield separation event, the failed mission should have no impact on future launches involving the vehicle.
Editorial Cloze Test Quiz
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