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Science Dictionary
Do you know what a meteor is, or what scientists mean when they are talking about cryogenics? Our collection of science terms explains the meaning of some of the most common scientific ideas.
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How Carl Sagan Worked
He may have been born in Brooklyn, but Carl Sagan was gunning for the stars as soon as he arrived in this world. Get to know the scientist whose infectious delight in the universe still holds us spellbound.
How Stephen Hawking Worked
He ventured to the abyss of black holes, wagered on the information paradox and floated around in zero gravity. Meet the man, the legend, the super scientist: Stephen Hawking.
How do you win a Nobel Prize?
How cool would that be to stand amongst the company of fellow laureates like Mother Teresa or Albert Einstein? We have some ideas for scoring you one (nominating yourself isn't one of them).
How are frequency and wavelength of light related?
Frequency has to do with wave speed and wavelength is a measurement of a wave's span. Learn how frequency and wavelength of light are related in this article.
10 Cool Things You Didn't Know About Stephen Hawking
He was born exactly 300 years after Galileo died. He never won a Nobel Prize, although he was awarded a guest spot on “The Simpsons.” What else do you know (or not know) about this acclaimed physicist?
How did the universe begin?
You've heard of the big bang, of course, but do you have any idea as to what was happening during that massive flurry of activity billions of years ago?
What are dark matter and dark energy?
Every day, astronomers unravel a little more of the universe's inner workings, but the jury is still out on 95 percent of its contents.
Quasar
Quasar, or Quasi-stellar Object (QSO), a starlike object displaying an unusually large red shift.
Magellanic Clouds
Magellanic Clouds, three irregularly shaped galaxies that lie some 150,000 to 200,000 light-years from earth.
Nostradamus
Nostradamus, the Latin name of Michel de Notredame (1503-1566), a French astrologer and physician.
Cassini, Giovanni Domenico
Cassini, Giovanni Domenico (Jean Dominique) (1625-1712), an Italian astronomer. As a skilled observer using the most accurate telescopes available at the time, Cassini made many important discoveries about the planets of the solar system.
Flammarion, (Nicolas) Camille
Flammarion, (Nicolas) Camille (1842-1925), a French astronomer. He was the author of many popular books on astronomy, including The Atmosphere (1871), Popular Astronomy (1879), and Astronomy for Amateurs (1904).
Laplace, Pierre Simon de
Laplace, Pierre Simon de, Marquis de Laplace (1749-1827), a French astronomer and mathematician.
Clark, Alvan
Clark, Alvan (1804-1887), a United States maker of astronomical lenses. Five times his firm, Alvan Clark & Sons, made the then-largest telescope lens in the world.
Cannon, Annie Jump
Cannon, Annie Jump (1863-1941), a United States astronomer. She had a long, distinguished career at Harvard Observatory, 18961940, and was one of the foremost women scientists of her time.
Antony Hewish
Hewish, Antony (1924-) is a British astronomer and astrophysicist, a scientist who studies the physical nature, origin, and development of the solar system, galaxies, and the universe.
Eddington, Sir Arthur Stanley
Eddington, Sir Arthur Stanley (1882--1944), a British astronomer. As chief assistant at the Royal Greenwich Observatory, 1906--13, he began his studies of the motion, internal structure, and evolution of stars.
Hall, Asaph
Hall, Asaph (18291907), a United States astronomer. In 1877 Hall discovered the two satellites of Mars, naming them Deimos and Phobos.
Lovell, Sir Bernard
Lovell, Sir (Alfred Charles) Bernard (1913-), an English astronomer. In 1946 Lovell demonstrated the validity of using the techniques of radio astronomy to study meteors.
Carolyn Shoemaker
Shoemaker, Carolyn (1929-) is an American astronomer. She has discovered more comets than any other living astronomer.
Cecilia Helena Payne-Gaposchkin
Payne-Gaposchkin, Cecilia Helena (1900-1979) was a British-born astronomer who became an authority on variable stars (stars that change in brightness) and the structure of the Milky Way Galaxy.
Young, Charles Augustus
Young, Charles Augustus (1834-1908) was a United States astronomer noted for his spectroscopic studies of the sun.
Abbot, Charles Greeley
Abbot, Charles Greeley (1872-1973) was a United States astrophysicist and authority on solar radiation.
Mason, Charles
Mason, Charles (1730-1787), an English astronomer and surveyor. In addition to surveying the boundary between Maryland and Pennsylvania, Jeremiah Dixon and he fixed the precise measure of a degree of latitude in America.
Charles Messier
Messier, Charles (1730-1817), a French astronomer, discovered or independently codiscovered some 20 comets, earning him the nickname the “ferret of comets” by King Louis XV.
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