5,645,249 views
7 years ago
78,889 views
2,572,000 views
8 years ago
350,627 views
Show more
38,748 views
258
0
Matt Parker
3.85K subscribers
Tags
science
peer review
exploration
innovation
cool
thing
about
curiosity
carl
sagan
neil
degrasse
tyson
Carl Sagan (Author)
24 Comments