NASA’s Juno spacecraft will fly past Earth on October 9 to receive a gravity assist, putting it on course for Jupiter. To celebrate, the Juno mission is inviting Amateur Radio operators around the world to say “HI” to Juno in a coordinated Morse code message. If enough operators participate, Juno’s “Waves” radio and plasma wave experiment should be able to detect the message. The Say “HI” to Ju...
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