What is Walt whitmans poem when I heard the Learned astronomer about?

Walt Whitman's poem "When I Heard the Learned Astronomer" is about the speaker's reaction to a lecture by an astronomer. The speaker is initially impressed by the astronomer's knowledge and the beauty of the universe he describes. However, he eventually comes to feel that the astronomer's focus on facts and figures has missed the true essence of the universe. The speaker argues that the universe is not just a collection of objects, but is also a source of wonder and mystery. He believes that the true way to understand the universe is not through science, but through intuition and imagination.

The poem is written in free verse, and uses a variety of rhetorical devices to convey the speaker's feelings. These devices include repetition, parallelism, and contrast. The poem's tone is reflective and contemplative, and it invites the reader to consider their own relationship to the universe.

"When I Heard the Learned Astronomer" is a complex and challenging poem, but it is also a rewarding one. It is a reminder that there is more to the universe than what we can see with our eyes, and that the true nature of reality is often beyond our comprehension.