Discover and read the best of Twitter Threads about #GA2018
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Tonight at #GA2018, @elakdawalla is giving the Helen Sawyer Hogg Public Lecture on “ The Golden Age of Space Exploration.” Good crowd here! 
.@elakdawalla: Pluto’s moon Charon was discovered 40 years ago this week! #GA2018
.@elakdawalla: The @NewHorizons2015 mission to Pluto is only about the size of a grand piano—needed to be small to travel quickly. #GA2018
