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English citations of zettagram

  • 1994, New Scientist, Volume 144, Issues 1951-1958‎, page 81:
  • one Earth mass is now simply 5977 yottagrams (Yg), and the planets can be measured in Yg and moons in zettagrams (Zg).
  • The atmosphere has a mass of about five zettagrams (5x1018kg or 5 pentatonnes).