Aspiring teenage astronauts reveal that a journey to Mars is closer than you think.
Bill Nye
Self
Jeffrey Kluger
Neil deGrasse Tyson
Michio Kaku
Bobak Ferdowsi
Andy Weir
Tim Urban
Elon Musk
2018 • 7.5 ★
2011 • 6.4 ★
2008 • 7.7 ★
2007 • 7.5 ★
2015 • 6.2 ★
