How big is the universe? Will it ever end? Why is so much of it made of mysterious dark matter and energy? See how mind-bending discoveries over the past 50 years have revolutionized our understanding of the universe.
Duration: 56 minutes and 46 seconds
Episode Number: 5108
No future air times were found for this episode.
PBS' premier science series helps viewers of all ages explore the science behind the headlines.
Along the way, NOVA programs demystify science and technology and highlight the people involved in scientific pursuits.
| Wed, Feb 11 | 9:00 P.M. | Mammal Origins NHPBS (11.1) |
| Thu, Feb 12 | 1:00 A.M. | Mammal Origins NHPBS (11.1) |
| Fri, Feb 13 | 4:00 P.M. | Mammal Origins NHPBS (11.1) |
| Sat, Feb 14 | 5:00 A.M. | Lee and Liza's Family Tree NH World (11.3) |
| Sat, Feb 14 | 1:00 P.M. | Mammal Origins NH Explore (11.2) |
| Sun, Feb 15 | 12:00 A.M. | Mammal Origins NHPBS (11.1) |
| Sun, Feb 15 | 4:00 A.M. | Mammal Origins NH Explore (11.2) |
| Sun, Feb 15 | 7:00 A.M. | Mammal Origins NHPBS (11.1) |
| Sun, Feb 15 | 8:00 P.M. | Mammal Origins NH Explore (11.2) |
| Mon, Feb 16 | 1:00 A.M. | Mammal Origins NH Explore (11.2) |
| Tue, Feb 17 | 7:00 P.M. | Mammal Origins NH World (11.3) |
| Tue, Feb 17 | 8:00 P.M. | Critical Condition: Health In Black America NH World (11.3) |
| Wed, Feb 18 | 12:00 A.M. | Mammal Origins NH World (11.3) |
| Wed, Feb 18 | 1:00 A.M. | Critical Condition: Health In Black America NH World (11.3) |
| Wed, Feb 18 | 5:00 A.M. | Lee and Liza's Family Tree NH World (11.3) |
| Wed, Feb 18 | 8:00 A.M. | Mammal Origins NH World (11.3) |
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