Episode

Dr Karl on triplej

ABC Science

Science & Medicine

Join Dr Karl Kruszelnicki, Zan Rowe and their scientific guests, with a bunch of curious triplej listeners for a weekly injection of science, myth-bashing and answers! Thursdays from 11am EST.

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Eye twitches, light years, clean lungs.

May 7th, 2014

Episode 49 of 168 episodes

How do astronomers measure light years?

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