Jupiter Has a New Moon. And We Put It There.

At 03:53 UTC on July 5th, 2016 (or 11:53 p.m. Eastern US time on July 4th), Jupiter got a new moon. And its name is Juno. At that time, the main engine of the spacecraft cut off, having burned for 35 minutes and two seconds. When it did, Juno was on a looping, highly elliptical 53.5-day orbit, the first spacecraft to orbit Jupiter since Galileo did in 1995. The engine burn was tense. 35 minutes is a long time for a spacecraft burn; after 20 minutes it had slowed Juno enough to be in orbit, but n...