Too late for anyone to see this comment, and it's just a trivial bugbear of mine, but the article has this:

> "... meaning a radio signal will take a full 24 hours—a full light-day—to reach it."

They don't mean "a full light-day" ... they mean "a full day". They're talking about the time it will take, and "light-day" is the distance it's travelling.

A trivial type error that a compiler would barf on, that people will gloss over and not notice, but which niggles at me.

Sorry ... I now return you to your regular programming.