How do you calculate the distance to a star?
In the absence of a giant ruler, how does one go about measuring how far the Earth is from a star? Simon Singh explains in this QotW. Plus, we ask where in the world gravity feels strongest.
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Hi Dr. Chris
Your Podcast, naked astronomy, ask the naked scientist are all very interesting and excellent for science hungry people like us.
Great companion during my daily walk.
My question is on astronomy and very simple. When you look at distant object like stars, th...