Caltech Researchers Find Evidence of a Planet Beyond Pluto

Re:Caltech Researchers Find Evidence of a Planet Beyond Pluto by daveguy on Wednesday January 20, 2016 @12:54PM (#10939931)

I would expect a smear with characteristics of the planet would be as effective to identify it as a single snapshot. Wouldn't the direction be well identified from indirect detection? Is the blur also less effective because of increased background exposure?

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Re:Caltech Researchers Find Evidence of a Planet Beyond Pluto by jschwartzi on Wednesday January 20, 2016 @01:29PM (#10940203)

Well, if the smear takes the light level below the noise floor of the sensor then you can't even say that there's a smear.

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Re:Caltech Researchers Find Evidence of a Planet Beyond Pluto by mkrfox on Wednesday January 20, 2016 @02:52PM (#10940842)

That's why you don't see any cars in long exposures of highways.

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