What if an AI agent could explore the universe every day and turn NASA's Astronomy Picture of the Day into a creative digital postcard — without anyone needing to press a button?

That idea became Cosmic Postcard, an autonomous creative agent that combines NASA's Astronomy Picture of the Day (APOD), Amazon Bedrock, and AWS serverless services to generate and publish a new cosmic postcard every day.

The agent retrieves the latest astronomical discovery, interprets it creatively using generative AI, and stores the result for a web application to display.

No manual prompts. No daily intervention.…