PSLV Orbital Experiment Module

The PSLV Orbital Experiment Module (POEM) is a modified fourth stage of the Polar Satellite Launch Vehicle (PSLV) that functions as an orbital micro-gravity test bed. By adding modular subsystems such as power generation, communication, and stabilization, POEM can host payloads for up to six months while in orbit. The objective of POEM is to provide a low-cost platform for Indian academia and start-ups to conduct experiments in micro-gravity conditions. POEM was initially tested in 2017 on the PSLV-C37 and PSLV-C38 campaigns, and has since been used to host various payloads, including the IDEA, mAMP, and Earth Pointing Platform. In April 2019, POEM was augmented with solar cells to provide power, and was used to host three payloads, including the ARIS 101F and AISAT. ISRO has issued an Announcement of Opportunity for in-orbit scientific experiments on POEM, and has launched two orbital platforms, POEM-1 and POEM-2, in June 2022 and April 2023, respectively.learn more on wikipedia