The New Horizons spacecraft will reach faraway Kuiper Belt object 2014 MU69 in the first minutes of 2019.  Will the body informally known as Ultima Thule be as mysterious and exciting as Pluto? We’ll hear from the mission’s Principal Investigator, Alan Stern. Senior Editor Emily Lakdawalla takes us through 2018’s biggest planetary science and exploration moments.  The coolest asteroid defense stickers in the solar system could be yours if you win the new What’s Up space trivia contest.  Learn more at:  http://www.planetary.org/multimedia/planetary-radio/show/2018/1226-2018-alan-stern-new-horizons.html Learn more about your ad choices. Visit megaphone.fm/adchoices

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