Six Months in Ascension. A Unscientific Account of a Scientific Expedition.
London: John Murray, 1878. Life on Ascension Island with her husband Scottish Astronomer David Gill to measure the solar parallax-the distance between the Earth and the Sun-by observing Mars, which was then the closest to Earth than it had been for a century. Read More about Six Months in Ascension. A Unscientific Account of a Scientific Expedition
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