n MNASSA : Monthly Notes of the Astronomical Society of South Africa - Proxima : The Nearest Star (other than the Sun!), I.S. Glass : book review

Volume 67, Issue 9_10
  • ISSN : 0024-8266



One could say that this book is about the attempts of astronomers (two in particular) to measure accurately the difference between two angles. A difference which turns out to be three one-hundredths of a second of arc (0.03'') - equivalent to measuring the width of a human hair from a kilometre away! The angles in question, called parallax, determine the distances to the nearest stars.

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