Answer: hyperbole, overstating the importance of the Sun
Explanation:
Hyperbole is a figure of speech that has to do with statements that are exaggerated. An example of hyperbole is "My mum has enough food in the kitchen that can feed the country".
With regards to the question, the figurative language that is used in the sentence is hyperbole, overstating the importance of the Sun. Here, the importance of the Sun is exaggerated.