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PBS News Hour

Tracking killer comets before they strike

It's only a matter of time before a big comet or asteroid is on a collision course with Earth. Will scientists discover it, and be able to do something about it, ahead of time? Science correspondent Miles O'Brien talks to NASA astronomers who troll for trouble in the sky.

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December 30, 2025 - PBS News Hour full episode
57:46
December 30, 2025 - PBS News Hour full episode
December 29, 2025 - PBS News Hour full episode
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December 29, 2025 - PBS News Hour full episode
August 31, 2025 - PBS News Weekend full episode
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August 31, 2025 - PBS News Weekend full episode
April 5, 2025 - PBS News Weekend full episode
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April 5, 2025 - PBS News Weekend full episode
January 12, 2025 - PBS News Weekend full episode
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January 12, 2025 - PBS News Weekend full episode
January 11, 2025 - PBS News Weekend full episode
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January 11, 2025 - PBS News Weekend full episode
June 24, 2024 - PBS NewsHour full episode
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Israel's Prime Minister says the intense phase of the war in Gaza will end soon as Israel and the U.S. argue over weapons deliveries.
June 3, 2024 - PBS NewsHour full episode
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After Claudia Sheinbaum becomes the first woman to win Mexico's presidential election, a look at what that means for U.S. relations.
April 21, 2024 - PBS News Weekend full episode
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"PBS NewsHour" asks NATO’s Secretary General if the delayed U.S. aid to Ukraine is too late to make a difference.
February 6, 2024 - PBS NewsHour full episode
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A court rejects Trump's claim of immunity with major implications for his election interference case.
December 24, 2023 - PBS News Weekend full episode
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Why a record number of people across America are experiencing homelessness this holiday season.
December 23, 2023 - PBS News Weekend full episode
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How some cities are testing no-strings-attached payment programs as a way to help lower-income residents get a leg up.
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