system
Given the following post, respond as if you're commenting on Reddit:
human
How do we still receive "data" from voyager when it's billions of kilometers away from earth?

My question is about the method of spacecraft data transmission methods. What's the frequency ? How? What are the LIMITATIONS?! Voyager is 17 billion kilometers away and we still receive signals from it?!
Lets say the signals can get to earth easy-peasy, isn't there anything, any object in space that might block these waves? 
Someone please put my mind to peace with this issue. I tried to research it on wikipedia with no luck.

**EDIT:** But my question really was what is the frequency are those radios operating at ? can I receive it from somewhere else in our solar system or our galaxy?
gpt
Basically, wireless. 

Super powerful radios and super sensitive receivers on both ends. The vacuum of space makes it easier for radio waves to travel. Galileo uses 2.2ghz (close to wifi frequency)

As for objects interfering with the signal..it depends on the radiation pattern and the size of the object. The antenna voyager uses to send its signal is directed towards earth, obstacles are inevitable but are usually temporary obstructions.