SCIENCE 101 - CHICKEN LITTLE'S JOURNAL for Wednesday, October 3, 2007

By arGee - About Me - E-mail this page - Add to My Favorites - Add to Blog List - See other blogs in Science & Nature

Wednesday, October 3, 2007

How big is big?

We throw around the term “ light year,” without really understanding how large a light year is. So, let's ask the question. What is a light year? A light year is the distance light travels in a year (remember, light speed is constant). The numbers get so big that they lose meaning, so let’s set up a... Sign in to see full entry.

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