Near Earth Objects

[nivek]

They should offer a college course for Marvel fans. It looks like the celestial being was bio-mechanical.
Celestial (comics) - Wikipedia

Both in the movie and in comics its presented as bio-mechanical, there's a city inside the head like a mining and trading colony, they harvest spinal fluids and bio-matter from inside the large head...

 

[humanoidlord]

I seriously wouldn't doubt if an object that going to hit the planet has some kind of graffiti on it. A group with an ability to steer a 2,000 foot diameter rock could be using it as a form of intimidation. CyberKen said the reptilians like to throw rocks.

a asteroid that looks like a skull that only appears during halloween, thats stretching probability

 

[nivek]

a asteroid that looks like a skull that only appears during halloween, thats stretching probability

The head could have been collecting dust and debris for millions of years making it more creepy looking...

...

 

[Toroid]

I'm surprised no one has called it pareidolia yet.
Definition of PAREIDOLIA