1898 in science

The year 1898 in science and technology involved some significant events, listed below.

Archaeology

Annie Scott Dill Maunder photographs the Sun's outer corona during a solar eclipse in India.
433 Eros, the first near-Earth object, is discovered.
George Darwin proposes that the Earth and Moon had once been one body.

March 26 – The Sabi Game Reserve in South Africa, the first officially designated game reserve, is created.

William Ramsay and Morris Travers discover the noble gases krypton, neon and xenon at University College London.
July 28 – Marie and Pierre Curie announce discovery of a substance they call Polonium.
December 26 – Marie and Pierre Curie announce discovery of a substance they call radium. It is the only moment where 5 elements are discovered the same year.
Emil Fischer synthesizes purine.
Richard Willstätter analyzes the structure of the cocaine molecule in a synthesis derived from tropinone.
Polycarbonates are first discovered by German chemist Alfred Einhorn.
Polyethylene is first synthesized by German chemist Hans von Pechmann.

January 30–February 13 – The Belgian Antarctic Expedition led by Adrien de Gerlache on the Belgica (1884)|Belgica] discovers the Gerlache Strait and Lemaire Channel off the west coast of Graham Land on the Antarctic Peninsula. The expedition then becomes the first to winter in Antarctica.

Ladislaus Bortkiewicz publishes a book about the Poisson distribution, The Law of Small Numbers, first noting that events with low frequency in a large population follow a Poisson distribution even when the probabilities of the events vary.

June 23 – Royal Army Medical Corps formed within the British Army.
October 28 – French serial killer Joseph Vacher is convicted, based largely on forensic evidence presented by Alexandre Lacassagne.
Paul Flechsig divides the cytoarchitecture of the human brain into 40 areas.
Peter Borovsky, a Russian military surgeon working in Tashkent, publishes the first accurate description of the causative parasite for "Sart sore".
Patrick Manson publishes Tropical Diseases: a manual of the diseases of warm climates in London, a pioneering English language textbook in tropical medicine.

January 7 – Joseph O'Dwyer, American physician.
February 28 – Fyodor Pirotsky, Ukrainian-born Russian military and electrical engineer and inventor.
March 12 – Johann Balmer, Swiss mathematician.
March 15 – Henry Bessemer, English inventor of the Bessemer process for steelmaking.
May 29 – Lyon Playfair, 1st Baron Playfair, Scottish chemist.
August 27 – John Hopkinson, English electrical engineer.
September 14 – William Seward Burroughs, American inventor of the adding machine.
November 20 – Sir John Fowler, 1st Baronet, English civil engineer.