Concept

1899 in science

Summary
The year 1899 in science involved some significant events, listed below. Astronomy
  • December 2 – During the new moon, a near-grand conjunction of the classical planets and several binocular Solar System bodies occur. The Sun, Moon, Mercury, Mars and Saturn are all within 15° of each other, with Venus 5° ahead of this conjunction and Jupiter 15° behind. Accompanying the classical planets in this grand conjunction are Uranus (technically visible unaided in pollution-free skies), Ceres and Pallas.
  • The 80 cm refracting telescope is completed at Potsdam Observatory.
Biology
  • May 1 – The National Trust in the United Kingdom acquires its first part of Wicken Fen, making it the country's oldest wetland nature reserve.
  • November 8 – The New York Zoological Society opens the Bronx Zoological Park to the public in New York City under the direction of William Temple Hornaday.
Chemistry
  • Actinium is discovered by André-Louis Debierne.
  • International Commi
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