Bengaluru: ISRO Confirms Successful Re-entry of PSLV Orbital Platform Experiment Module
ISRO has confirmed that the fourth edition of the PSLV Orbital Platform Experiment Module (POEM-4), a repurposed upper stage of the Polar Satellite Launch Vehicle, has safely re-entered the Earth’s atmosphere. The module re-entered the atmosphere and impacted in the Indian Ocean at 02:33 UTC (08:03 IST) on April 4, 2025.
The re-entry of POEM-4 marks a significant milestone for ISRO, showcasing its commitment to reducing space debris and supporting the long-term sustainability of outer space through its Debris Free Space Mission (DFSM). The module was initially launched on December 30, 2024, as part of the PSLV-C60 mission, which successfully deployed twin SPADEX satellites at an altitude of 475 km. Following satellite deployment, the specially configured upper stage, designated as POEM-4, remained in orbit for experimental purposes.
POEM-4 was later de-orbited through engine restarts, bringing it to a nearly circular orbit at 350 km altitude with a 55.2 inclination. In a critical step to ensure safety, ISRO passivated the upper stage by venting out any leftover fuel, thereby reducing risks of accidental break-up. Throughout its operational period, POEM-4 hosted 24 payloads, including 14 from ISRO and 10 from non-governmental entities (NGEs). All onboard instruments functioned successfully, generating significant scientific data.
ISRO, in collaboration with the United States Space Command (USSPACECOM), closely tracked POEM-4 during its time in orbit. As the module’s orbit decayed to 174 km x 165 km, predictions pointed to an imminent atmospheric re-entry on April 4. The process was diligently monitored by ISRO’s System for Safe and Sustainable Space Operations Management (IS4OM), ensuring a controlled and safe descent.
This event highlights ISRO’s leadership in responsible space practices, setting an example for sustainable space operations worldwide.
Reference : https://zeenews.india.com/science-environment/isro-s-poem-4-safely-re-enters-earth-s-atmosphere-reinforces-space-debris-free-commitment-2881966.html
![AP Outsourcing Jobs 2025: Apply for [total_posts] APCOS Vacancies](https://theprimenewsnetwork.com/wp-content/uploads/2025/05/AP-Outsourcing-Jobs-2025-Apply-for-total_posts-APCOS-Vacancies-150x150.png)
