Search results
Results from the WOW.Com Content Network
Fort Hill, photographed in 1887, was the home of John C. Calhoun and later Thomas Green Clemson and is at the center of the university campus.. Thomas Green Clemson, the university's founder, came to the foothills of South Carolina in 1838, when he married Anna Maria Calhoun, daughter of John C. Calhoun, the South Carolina politician and seventh U.S. Vice President. [15]
On Clemson's death in 1888, he willed the land to the state of South Carolina for the creation of a public university. The university was founded in 1889, and three buildings from the initial construction still exist today: Hardin Hall (built in 1890), Main Building (later renamed Tillman Hall) (1894), and Godfrey Hall (1898). Other periods of ...
Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.
The term "black hole" was used in print by Life and Science News magazines in 1963, [61] and by science journalist Ann Ewing in her article " 'Black Holes' in Space", dated 18 January 1964, which was a report on a meeting of the American Association for the Advancement of Science held in Cleveland, Ohio. [62] [63]
In astrophysics, an event horizon is a boundary beyond which events cannot affect an observer. Wolfgang Rindler coined the term in the 1950s. [ 1] In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape. [ 2] At that time, the Newtonian theory of gravitation and ...
Thomas Green Clemson (July 1, 1807 – April 6, 1888) was an American politician and statesman, serving as Chargés d'Affaires to Belgium, and United States Superintendent of Agriculture. He served in the Confederate Army and founded Clemson University in South Carolina. Historians have called Clemson "a quintessential nineteenth-century ...
On December 3, 1818, Illinois became the 21st U.S. state. Early U.S. expansion began in the south part of the state and quickly spread northward, driving out the native residents. In 1832, some Native American "Indians" returned from Iowa but were driven out in the Black Hawk War, fought by militia.
1 × 1010[ 47] There are actually two black holes, orbiting at each other in a close pair with a 542-day period. The largest one is quoted, while the smaller one's mass is not defined. [ 47] Black hole of central elliptical galaxy of RX J1532.9+3021. 1 × 1010[ 48] QSO B2126-158. 1 × 1010[ 23] – 4.9+1.13.