Sun May 18 08:44:25 UTC 2025: **Summary:**

An Indian Space Research Organisation (ISRO) PSLV rocket mission, designated C61, carrying the EOS-09 satellite, failed shortly after launch on May 18, 2025. The rocket experienced a problem in its third stage due to a drop in chamber pressure. ISRO will investigate the cause of the failure and plans to reattempt the mission.

**News Article:**

**ISRO’s PSLV-C61 Mission Fails After Launch**

**Sriharikota, India – May 18, 2025** – The Indian Space Research Organisation (ISRO) experienced a setback today as its PSLV-C61 mission, carrying the EOS-09 satellite, failed shortly after liftoff from Sriharikota. The launch, which took place at 5:59 am IST, aimed to place the EOS-09 satellite into a sun-synchronous polar orbit (SSPO).

According to ISRO Chairman V. Narayanan, the failure occurred due to a drop in chamber pressure within the third stage of the rocket. The PSLV, or Polar Satellite Launch Vehicle, is a four-stage rocket designed to launch satellites into SSPOs.

“The chamber pressure in the casing that contained the third-stage motor fell during the flight, leading to the unfortunate outcome,” said Narayanan shortly after the failure became apparent.

ISRO is launching an immediate investigation to determine the cause of the pressure loss. The organization plans to reattempt the mission with another version of the EOS-09 satellite after the issue is resolved. The failure represents a rare setback for the PSLV program, which has been a reliable workhorse for ISRO for many years.

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