system
Given the following post, respond as if you're commenting on Reddit:
human
[40k] What options are there to seal the eye of terror and whats it face on Earth?

Aside from the Emperor putting his golden skeleton ass on it for 1000 years?

Also, another thought. Whats to stop someone taking the emperors femur to the eye of terror and getting that closed as well? Seems like that would be pretty good for mental health in the imperium.
gpt
The gate on Terra is a manufactured door into the Webway. It's formed a sort of warp-breach because it's made of plas-steel and adamantium, rather than the Psychoactive material of the Webway proper, and as such... kinda sucks. It's like sticking a straw into your arm. Because it's not actually flesh, infections can get in, and bloooood can get out. The Emperor's Webway gate isn't an actual warp-breach, it's just a hole in a sealed system that connects to the Warp, allowing Daemons to get into the material universe because he is teh-dumbz. 

But it's closed. All you needed to do was shut the door. And it's shut. No more worry. 

The Eye of Terror is a bigger problem though. Not even the Emperor has the power to close it. The only real hope is that the Necrons get their shit together and figure out some technology to repair the damage.