Satellite Internet of Things (Satellite IoT) is an emerging research area that leverages satellite communication to extend IoT connectivity to remote, rural, maritime, and disaster-prone regions where terrestrial networks are unavailable or unreliable. Research papers in this field focus on designing energy-efficient communication protocols, lightweight device-to-satellite uplink strategies, and resource management frameworks to handle massive IoT device deployments. Key studies explore integration with 5G/6G networks, non-terrestrial networks (NTN), low Earth orbit (LEO) satellite constellations, and edge computing to achieve low-latency and scalable connectivity. Security, privacy, and interoperability are major concerns, with recent works proposing blockchain-enabled authentication, lightweight encryption, and AI-driven anomaly detection. Additionally, Satellite IoT research highlights applications in precision agriculture, environmental monitoring, disaster management, logistics, and global asset tracking, making it a critical enabler for universal IoT coverage and resilient smart infrastructures.