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PBS News Hour

Four light years away, a planet may be hospitable to life

Scientists have discovered a potentially habitable new world, a mere four light years away from Earth. They call the planet “Proxima b,” and it may feature characteristics that are just right for human life. Nonetheless, it has some major differences from Earth -- a year on the planet lasts only 11 days. Hari Sreenivasan speaks with science correspondent Miles O'Brien for background.
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October 23, 2025 - PBS News Hour full episode
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Season 2025 Episode 296
October 23, 2025 - PBS News Hour full episode
October 23, 2025 - PBS News Hour full episode
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Season 2025 Episode 295
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Season 2025 Episode 294
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October 21, 2025 - PBS News Hour full episode
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Season 2025 Episode 293
October 20, 2025 - PBS News Hour full episode
October 20, 2025 - PBS News Hour full episode
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Season 2025 Episode 292
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October 19, 2025 - PBS News Weekend full episode
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Season 2025 Episode 291
October 18, 2025 - PBS News Weekend full episode
October 18, 2025 - PBS News Weekend full episode
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Season 2025 Episode 290
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October 17, 2025 - PBS News Hour full episode
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Season 2025 Episode 289
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Season 2025 Episode 288
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October 15, 2025 - PBS News Hour full episode
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Season 2025 Episode 287
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October 14, 2025 - PBS News Hour full episode
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Season 2025 Episode 286
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October 13, 2025 - PBS News Hour full episode
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Season 2025 Episode 285
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October 12, 2025 - PBS News Weekend full episode
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