Tracking killer comets before they strike

Name: Tracking killer comets before they strike
Uploaded: 2014-10-18T00:06:57Z
Duration: P577S
Description: 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.

Clip: Season 2014 | 9m 37s

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.

Aired: 10/17/14

Rating: NR

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Major corporate funding for the PBS NewsHour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by Consumer Cellular and American Cruise Lines. For a complete list of funders for the PBS NewsHour and PBS NewsHour weekend, click here.

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Tracking killer comets before they strike

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