The upper stage of ISRO's PSLV-C37, which launched 104 satellites in 2017, safely re-entered Earth's atmosphere, landing in Atlantic Ocean, ISRO stated. After delivering its payloads, the PS4 stage remained in orbit. ISRO tracked its orbital decay, predicting the re-entry in early October, which occurred on Sunday. ISRO said the re-entry complied with international debris mitigation guidelines.