Radio Ping-Pong With Mars
Because radio waves travel at the speed of light, talking with a spacecraft on Mars is a slow game of ping-pong: an instruction takes 3 to 22 minutes to arrive, and its reply takes just as long to return.
What is and is not to scale.
How this was made and sources
One HTML file: no libraries, no network requests. Every number below was read on the date shown, from the page named next to it.
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