Some dream of space, others dare to conquer it.
Aspiring teenage astronauts reveal that a journey to Mars is closer than you think.
Bill Nye
Self
Jeffrey Kluger
Self
Neil deGrasse Tyson
Self
Michio Kaku
Self
Bobak Ferdowsi
Self
Andy Weir
Self
Tim Urban
Self
Elon Musk
Self
