#NeildeGrasseTyson talks with #Grover from #SesameStreet at #Mashable Show. #SXSW Happened on 12 Mar 2017 Original Tweet: https://twitter.com/mashable/status/840976607409971201

#NeildeGrasseTyson talks with #Grover from #SesameStreet at #Mashable Show. #SXSW

Happened on 12 Mar 2017

Original Tweet:

https://twitter.com/mashable/status/840976607409971201

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