The recent advancements in augmented reality (AR) and extended reality (XR) technologies are significantly reshaping various fields, particularly in space exploration and industrial maintenance. In the realm of space exploration, there is a notable shift towards enhancing astronaut autonomy through reliable AI assistants and immersive training environments. These technologies are being developed to address the unique challenges of long-duration space missions, such as communication delays and the need for real-time data analysis. AR and XR are also being utilized to simulate lunar and Martian environments, preparing astronauts for the specific conditions they will encounter, thereby improving mission safety and efficiency. On the industrial front, AR is revolutionizing maintenance practices by providing real-time, expert-aided support to technicians, thereby enhancing both efficiency and safety. These innovations are not only advancing current capabilities but also paving the way for future breakthroughs in human-machine interaction and autonomous systems. Notably, the integration of AI, AR, and XR in these contexts is demonstrating substantial potential for improving situational awareness, decision-making, and overall operational performance.