Elon Musk shows off new SpaceX rocket engines for Starship. Twitter fans see Daleks.

Elon Musk seems pretty proud of his company SpaceX's new rocket engines. 

This week, Musk showed off a batch of the new Raptor 2 engines at the SpaceX's Starbase facility in Texas, where they will be used on the first orbital flight of the company's Starship megarocket later this year. 

"Raptor 2 rocket engines at Starbase, each producing over half a million pounds (230 tons) of force," Musk wrote in the Twitter post on Tuesday (April 26). Musk's photo showed what appeared to be over a dozen of the new rocket engines, but his Twitter fans saw something else: evil Daleks from Doctor Who.

"It was only a matter of time before he started building Daleks," wrote Twitter user Richard Nellis as the term "Daleks" began trending after Musk's photo post. 

"Turns out Elon has created Daleks. Elon IS Davros," wrote Simon, another Twitter user, referring to the creator of the Dalek warriors, who reside inside machines do bear some resemblance to a rocket engine nozzle. 

Here's a look at Doctor Who's Daleks. Do you think SpaceX's Raptor 2 engines are similar?

To be clear, Elon Musk has not created a race of evil warriors that cry "Exterminate!" as they take over the world. The Raptor 2 will be the workhorse engine for SpaceX's Starship rockets and their massive Super Heavy boosters. 

Each Super Heavy booster will be powered by 33 Raptor 2 engines while the Starship vehicle will use nine Raptor 2 engines of its own. Like SpaceX's veteran Merlin engines on its Falcon 9 rockets, the Raptor 2 is designed to be reusable, as are the Starship and Super Heavy vehicles. 

The Raptor 2 is fueled by liquid methane and liquid oxygen, which is a new fuel for SpaceX. It's Falcon 9 rockets use liquid oxygen and rocket-grade kerosene in their Merlin engines. 

SpaceX has been developing its Raptor engines for several years, with Raptor 2 as the result. It has a more streamlined design over SpaceX's first version of the Raptor, including less complicated tubing and plumbing lines.

"The V1 kind of looks like a Christmas tree spaghetti pile — a lot of 'fibbly' bits. V2 is greatly simplified while also increasing thrust at the same time," Musk said in a Feb. 10 Starship update. 

It may be SpaceX's work to streamline the Raptor 2 that gave it a more Dalek-like resemblance for Doctor Who fans this week. Still, some fans of the sci-fi show were surprised Musk hadn't targeted a different Who villain to emulate. 

"I always thought Elon Musk would create Cybermen before he created Daleks," wrote Geekgirlforever.

Email Tariq Malik at tmalik@space.com or follow him @tariqjmalik. Follow us @Spacedotcom, Facebook and Instagram.