What natural phenomenon does the speaker admire in poem My Heart Leaps Up also known as The Rainbow by William Wordsworth?

In the poem "My Heart Leaps Up" by William Wordsworth, the natural phenomenon that the speaker admires is the rainbow. The poem depicts the speaker's pure joy and delight upon seeing a rainbow, which he personifies as a celestial creature, dancing and weaving in the sky. Wordsworth celebrates the rainbow's beauty and its ability to evoke happiness, describing it as a symbol of hope, promise, and nature's magnificence. Throughout the poem, he expresses his profound appreciation and connection to this natural phenomenon.