Five Star Gift Ideas

How about giving him a book on the topic of cosmology? Here are some recommendations:

1. "Cosmos" by Carl Sagan - This classic book about the universe is a great read for anyone interested in cosmology.

2. "The Elegant Universe" by Brian Greene - This book explores the theory of string theory and gives readers a deeper understanding of the universe.

3. "The Fabric of the Cosmos" by Brian Greene - This book delves into the nature of space and time and how our perception of them can change.

4. "A Brief History of Time" by Stephen Hawking - This book provides an overview of different ideas in cosmology and is a great starting point for those interested in the field.

Another idea could be to give your dad a personalized star map. You can get a map of the stars that were visible on his birthday or another significant date, and have it framed and personalized with his name and a message. There are many websites that offer this service.

Lastly, you could consider purchasing a telescope for your dad if he doesn't already have one. This would allow him to explore the cosmos in more depth and could be a great way to inspire his love for cosmology.