Breadcrumb Home How people from Earth said 'Hi' to a passing spacecraft Wednesday, December 11, 2013 The Gazette http://www.universetoday.com/107098/how-people-from-earth-said-hi-to-a-passing-… This video details what took place when the Jupiter-bound Juno spacecraft swung past Earth on Oct. 9, for a gravity assist, and amateur radio operators around the world sent a Morse Code saying “HI” to the spacecraft.