system
Given the following post, respond as if you're commenting on Reddit:
human
How long would the communication delay be from Mars to Earth?

How long would the delay in communications be through audio and video from a person on Mars to a person on Earth?
gpt
The distance between Earth and Mars depends on where they are in their orbit, but it can vary between approximately 55 million and 400 million km. Light (or any other electromagnetic signal) travels 18 million km per minute, so sending a signal from Mars to Earth (or the other way around) would take anywhere between 3 and 22 minutes.