Back in 2014, I posted an update about The Emitter Spaceship. I was mainly focusing on demonstrating the non-linearity aspect of the game by showing the different ways the player can solve the puzzle associated with The Emitter Spaceship. Here's a link to the post from 2014.
I have explained: "Emitters are used for the main communications with Earth. They are used due to the distortion from the massive magnetic field of Jupiter." - Anas-tronaut blog
You can find more information on this post from 2015.
On the first episode of Star Trek Discovery, the Klingon's Sarcophagus -which is located in a highly radiated busy asteroids field- sent an intense light beam to communicate with other Klingon ships. Michael Burnham explained the light beam as: "It seems to be some sort of signal Emitter." - Star Trek Discovery Ep.1
Here's a YouTube video demonstrating one of the ways the player may use to reset The Emitter resulting in a message sent in the form of an intense beam of light: (no spoilers)