SpaceX's Super Heavy booster is a complicated beast!

On Thursday (July 29), SpaceX chief Elon Musk gave us an inside look at the engine section of a Super Heavy that's coming together at the company's South Texas site, near the Gulf Coast village of Boca Chica.

Related: SpaceX's Starship and Super Heavy rocket in pictures.

Completing feed system for 29 Raptor rocket engines on Super Heavy Booster pic.twitter.com/uARWx2HYTrJuly 29, 2021.

"Completing feed system for 29 Raptor rocket engines on Super Heavy Booster," Musk wrote via Twitter Thursday, where he posted a photo showing metal tubes radiating outward from the engine section's core like the spokes on a bicycle wheel. .

Super Heavy is the giant first stage of Starship, the fully reusable transportation system that SpaceX is developing to take people and cargo to the moon, Mars and beyond.

The upper stage is a 165-foot-tall (50 meters) spacecraft called Starship.

Starship will sport six Raptors and Super Heavy will have around 30, as Musk noted in his Twitter post.