Capa: Well, Mom and Dad. Uh, I Hope you’re proud of your son - saving mankind, and so on. By the time you get this message, I’ll be in the dead zone. It came a little sooner than we thought, but this means that you won’t be able to send a message back. So I just wanted to let you know that I don’t need the message because I know everything you wanna say.

Just remember it takes eight minutes for light to travel from Sun to Earth - which means you’ll know we’ve succeeded about eight minutes after we deliver the payload. All you have to do is look out for a little extra brightness in the sky. So if you wake up one morning and it’s a particulary beautiful day, you’ll know we made it. Okay, I’m signing out… And I’ll see you in a couple of years.

So if you wake up one morning and it’s a particularly beautiful day, you’ll know we made it.