Satellite Navigation Systems: NavIC vs GPS | PRELIMS 2026 | Science | Drishti IAS English

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Prepare for UPSC Prelims 2026 with this in-depth session on essential Science and Technology topics, covering the latest advancements in satellite navigation, observational astronomy, and celestial objects. Mr. Ramendra Pratap Singh, Expert Faculty at Drishti IAS, explains:
✔ Satellite Navigation Systems: NavIC vs GPS – Understand the key differences between the Indian regional system, NavIC, and the global GPS system, along with the role of atomic clocks and their importance in precise navigation.
✔ Observational Astronomy: James Webb Telescope, Hubble, and XPoSat – Learn about these groundbreaking space telescopes, their missions, and how they are revolutionizing our understanding of the universe, along with their contributions to X-ray polarimetry and black hole research.
✔ Celestial Objects: Pulsars, Magnetars, Nebulae, and the Life Cycle of Stars – Dive into the fascinating world of celestial objects, their characteristics, and their roles in the cosmic ecosystem. Understand how pulsars and magnetars function, the formation of nebulae, and the life cycle of stars.
This session is part of the 100 Most Important Topics for UPSC Prelims 2026 series, designed to help you ace Science and Technology-related MCQs in the Civil Services Examination.
Subscribe to Drishti IAS English for comprehensive UPSC 2026 preparation.
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