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Unless I'm mathing wrong, it takes about 22.5 hours for the signal to travel to/from Voyager 2 to earth, one way.

15 billion miles / 186,282 miles per second = 80,414 seconds

> If the command doesn't work - and controllers doubt it will - they'll have to wait until October for an automatic spacecraft reset. The antenna is only 2% off-kilter.

That's pretty smart to have such an automatic restart configured. I wonder what the details are - do they pre-program an antenna attitude for a specific moment in time, then do the reset if it's not overridden before the target date?