NASA on Monday took to social media to extend Diwali greetings with a celestial image captured by Hubble Space Telescope.The US space agency called the globular cluster, located 30,000 light-years away from Earth, a "celestial festival of lights".A globular cluster is a stable, tightly bound cluster of tens of thousands to millions of stars, and are associated with all types of galaxies."Happy #Diwali to all those who celebrate," NASA wrote in a post on X (formerly Twitter).