Nature in general is a major source of poetic inspiration. And the beauty of the night sky is high on the list. Whether with our naked eyes or with a space-borne telescope, the awesome universe is a source of wonder that often provides fresh metaphors for poetry.
Eventually I will create a dedicated blog to replace my Adventures in Astronomy by John C. Mannone: Research and Writings of a Physicist web page, but for now, even though it is a bit out of date, you can visit it.
John C. Mannone: The Art of Poetry 