Why does this pipe on the RS-25 engine bell have a series of 90-degree bends?

Robot dogs race across a simulated Red Planet in new reality TV series 'Stars on Mars' (exclusive)

Hello there! 'Star Wars: Obi-Wan Kenobi' TV series scores Marvel Comics adaptation

The first photos of the Sun were taken in 1845 by French physicists Louis Fizeau and Lion Foucault. In the 1860s, Warren de la Rue recorded the complete 11 year solar cycle in a series of almost 3000 images that clearly showed sunspots and other features