Secrets of the Universe

Season 1, Episode 5: Hunting for Earth's Twin

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In just one generation, our ability to search for planets beyond our solar system has transformed. With modern techniques and telescopes, planetary scientists have found thousands of exoplanets in our universe, and many of them have the perfect conditions for life. Are we about to find Earth’s twin?

All Episodes - Season 1

SLS: NASA's Mega Rocket
Episode 1
SLS: NASA's Mega Rocket
 James Webb: The $10 Billion Space Telescope
Episode 2
James Webb: The $10 Billion Space Telescope
 Skylab: NASA’s First Space Station
Episode 3
Skylab: NASA’s First Space Station
 To the Moon and Beyond
Episode 4
To the Moon and Beyond
 Hunting for Earth's Twin
Episode 5
Hunting for Earth's Twin
 Finding Life on Mars
Episode 6
Finding Life on Mars
 Chasing Black Holes
Episode 7
Chasing Black Holes
 How did the Universe Begin?
Episode 8
How did the Universe Begin?
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