The highest normal orbits for satellites are geostationary (sometimes called geosynchronous); a constant speed lets the satellite maintain the same view of Earth all the time.
Monthly Archives: April 2010
The Big Bang Theory is the most widely accepted explanation for the origin and evolution of the Universe, though some scientists dispute it and many say it may never be proven.
It’s the study of evolution and the origin, destiny, and distribution of life in the universe. Relying on the biological sciences, space exploration and space technology, the discipline asks: Where did we come from? Are we alone? What is our future on Earth and in space?
How many planets orbit our Sun? If you said nine, you’re shy by several thousand. Scientists consider asteroids to be minor planets – some are hundreds of miles wide (and seldom round).
M. WHARTON YOUNG (1903–1986) was a neuroanatomist whose primary research was in the fields of baldness and deafness and who also did research on the anatomical basis of glaucoma. A Fulbright scholar, professor, and visiting lecturer, he served as chairman of the Ninth International Congress of Anatomists in Leningrad, Russia, in 1970. Dr. Young received [...]
CARTER G. WOODSON (1875–1950), known as the Father of Negro History, set for himself the goal of providing a scientific and historical account of people of African ancestry. Born to former slaves, he educated himself as a youth and went on to earn a Ph.D. from Harvard University in 1912. Among his highly influential writings [...]
WILLIAM JULIUS WILSON (1935– ), one of America’s leading sociologist, and a prolific author, was, in 1996, named the Malcolm Wiener Professor of Social Policy at Harvard University’s John F. Kennedy School of Government. At Harvard, Dr. Wilson will also serve on the Advisory Board of the W.E.B. Du Bois Institute for African American Research. [...]
DONALD E. WILSON became Dean of the University of Maryland School of Medicine in September 1991. In May 1999, he was named Vice President for Medical Affairs of the University of Maryland, Baltimore. At the State University of New York Health Science Center in Brooklyn he was professor and chairman of the Department of Medicine, [...]
DANIEL HALE WILLIAMS (1858–1931) was the first person in the world to operate successfully on the human heart. He performed that feat in 1893 at Provident Hospital in Chicago and went on to perform other history-making operations. In 1891 he founded Provident Hospital, first hospital and training school for African American nurses and interns in [...]
JACK E. WHITE (1921–1988), who was director of the Howard University Cancer Research Center and chairman of the Department of Oncology at Howard University’s College of Medicine, made outstanding contributions to cancer research. He was a recipient of an award from the American Cancer Society for Outstanding Service to the Cause of Cancer Control. Dr. [...]