This Day In History
Sunday, September 23, 2018
On This Day

Events

in 1781

Size comparison of Earth and Uranus
Size comparison of Earth and Uranus
William Herschel discovers Uranus. Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. It is named after the ancient Greek deity of the sky Uranus, the father of Cronus (Saturn) and grandfather of Zeus (Jupiter). Though it is visible to the naked eye like the five classical planets, it was never recognized as a planet by ancient observers because of its dimness and slow orbit. Sir William Herschel announced its discovery on March 13, 1781, expanding the known boundaries of the Solar System for the first time in modern history. Uranus was also the first planet discovered with a telescope.
Uranus, space, Herschel

in 1897

San Diego State University...
San Diego State University is founded. San Diego State University (SDSU), founded in 1897 as San Diego Normal School, is the largest and oldest higher education facility in the greater San Diego area (generally the City and County of San Diego), and is part of the California State University system. It is the third-oldest university in the California State University system, and one of the oldest universities in California. SDSU has a student body of approximately 29,256 (as of the beginning of the Fall 2009 academic year) and an alumni base of more than 200,000. San Diego State University received nearly 60,000 undergraduate applications for the 2011 Fall semester. The school accepted 14,480 high school seniors and 2,748 transfers with an acceptance rate of 28.7% for the 2011 academic year.
San Diego State University, university, San Diego

in 1988

The Seikan Tunnel, the...
The Seikan Tunnel, the longest undersea tunnel in the world, opens between Aomori and Hakodate, Japan. The Seikan Tunnel is a 53.85-kilometre (33.46 mi) railway tunnel in Japan, with a 23.3-kilometre (14.5 mi) long portion under the seabed. Track level is about 140 metres (460 ft) below seabed and 240 m (790 ft) below sea level. It travels beneath the Tsugaru Strait—connecting Aomori Prefecture on the Japanese island of Honshu and the island of Hokkaido—as part of the Kaikyo Line of Hokkaido Railway Company. The name Seikan comes from combining the on'yomi readings of the first characters of Aomori and Hakodate, the nearest major city on the Hokkaido side.
tunnel, Aomori, Hakodate, Japan





Births

in 1781
Karl Friedrich Schinkel

Karl Friedrich Schinkel was a Prussian architect, city planner, and painter who also designed furniture and stage sets. Schinkel was one of the most prominent architects of Germany and designed both neoclassical and neogothic buildings.
in 1855
Percival Lowell

Percival Lawrence Lowell was a businessman, author, mathematician, and astronomer who fueled speculation that there were canals on Mars, founded the Lowell Observatory in Flagstaff, Arizona, and formed the beginning of the effort that led to the discovery of Pluto 14 years after his death. The choice of the name Pluto and its symbol were partly influenced by his initials PL.

Deaths

in 1901
Benjamin Harrison

Benjamin Harrison was the 23rd President of the United States (1889–1893). Harrison, a grandson of President William Henry Harrison, was born in North Bend, Ohio, and moved to Indianapolis, Indiana at age 21, eventually becoming a prominent politician there. During the American Civil War, he served the Union as a Brigadier General in the XX Corps of the Army of the Cumberland. After the war he unsuccessfully ran for the governorship of Indiana, and was later appointed to the U.S. Senate from that state.
in 2006
Maureen Stapleton

Maureen Stapleton was an American actress in film, theater and television.
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