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NOVA
NOVA Universe Revealed: Alien Worlds
Season 48
Episode 17
Ultra-sensitive telescopes have transformed alien planet-hunting from science fiction into enthralling hard fact. Join NOVA on a visit to exotic worlds orbiting distant suns to answer an age-old question with thrilling new science: are we alone?
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Discover the fascinating chemistry that makes our world and everything in it—including us.
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Can bringing predators—and fear—back into an ecosystem help restore its natural balance?
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Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.
53:30
Discover the science behind Leonardo da Vinci's masterpieces—and Mona Lisa's iconic smile.
53:15
Amazing fossils reveal how mammals took over after an asteroid wiped out the dinosaurs.
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53:32
Discover why scientists and entrepreneurs alike have their sights set on the Moon again.
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53:23
New archeological evidence shows the stunning engineering of the Great Pyramid of Giza.