system
Given the following post, respond as if you're commenting on Reddit:
human
How do the Mars orbiters (or rovers) communicate with the earth?How much signal is lost in space and how much time does it take?
gpt
They have a precise antenna pointing at the earth really accurately, because of this, hardly any information is lost. There is going to be some noise, but since the information is sent over a single frequency, the noise can be filtered quite easily.

As for the travel time: the distance between earth and Mars varies between 50 and 400 million km. Signals propagate through vacuum at the speed of light (300.000 km/s) therefore the signal will take anywhere between 3 and 25 minutes to reach earth.