A great gift for a grandson who is interested in cosmology might be a telescope so he can further explore space and the stars. Other gift ideas might include a set of space-themed books or a subscription to a magazine like Astronomy or Sky & Telescope. You could also consider getting him a scale model of a spaceship or a globe to help him better understand the galaxy. Another great idea is tickets to a planetarium or observatory, if there is one in your area.
Or you can get him a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.