Radio telescopes extend astronomy's best 'yardstick'

Radio astronomers have directly measured the distance to a faraway galaxy, providing a valuable "yardstick" for calibrating large astronomical distances and demonstrating a vital method that could help determine the elusive nature of the mysterious Dark Energy that pervades the Universe.

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<p><a href="http://www.physorg.com/news163682693.html">Radio telescopes extend astronomy's best 'yardstick'</a></p> <p>Radio astronomers have directly measured the distance to a faraway galaxy, providing a valuable "yardstick" for calibrating large astronomical distances and demonstrating a vital method that could help determine the elusive nature of the mysterious Dark Energy that pervades the Universe.</p>