Eureka: A Prose Poem is Edgar Allan Poe's audacious cosmological meditation, a hybrid of metaphysical essay, scientific speculation, and visionary prose poetry. Published in 1848, it attempts nothing less than an explanation of the universe's origin, structure, and destiny, anticipating in imaginative form ideas later associated with cosmic expansion and collapse. Its style is characteristically Poean: rigorous yet rapturous, argumentative yet incantatory, fusing Enlightenment reasoning with Romantic intuition and the sublime traditions of philosophical literature. Poe wrote Eureka near the end of a life marked by intellectual ambition, personal bereavement, and persistent marginalization within American letters. Known chiefly for tales of terror, detective fiction, and lyric melancholy, he also possessed a deep fascination with astronomy, mathematics, aesthetics, and epistemology. The death of his wife Virginia and his lifelong preoccupation with unity, loss, and transcendence helped shape this final major work into both a scientific hypothesis and a spiritual testament. Readers interested in Poe beyond the gothic tale will find Eureka indispensable. It rewards those drawn to speculative thought, poetic philosophy, and nineteenth-century debates about science and faith, offering a daring vision of cosmic order from one of America's most restless minds.