An Imaginary Science term coined by Percy Greg in Across the Zodiac: The Story of a Wrecked Record, Deciphered, Translated and Edited by P G (1880 2vols), denoting an Antigravity force here used to propel a Spaceship to Mars. As with Ursula Le Guin's much later coinage of Ansible, the term was adopted by other authors of both fiction and purported nonfiction. Story examples include: John Jacob Astor's A Journey in Other Worlds: A Romance of the Future (1894); S P Meek's "Cold Light" (March 1930 Astounding), though only as a passing mention; and Chris Roberson's "Annus Mirabilis" (in Tales of the Shadowmen, Volume 2: Gentlemen of the Night, anth 2006, ed Jean-Marc Lofficier and Randy Lofficier). [DRL]
see also: Power Sources.
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