The gravity and cosmology seminar series aims to foster collaboration, knowledge exchange, and research advancement within the Gravity and Cosmology Group in Thailand. By bringing together experts, researchers, and students, this series will provide a platform to discuss the latest developments in general relativity, quantum gravity, dark matter, dark energy, and the evolution of the universe. It will also strengthen international connections, inspire innovative research, and support the growth of the scientific community in Thailand. Through these seminars, we aim to cultivate a dynamic environment for learning, discovery, and academic excellence in the field of gravity and cosmology.