(Encyclopedia) Galilei, VincenzoGalilei, Vincenzovēnchĕnˈtsō gälēlĕˈē [key], d. 1591, Italian lutenist, singer, writer, and composer; father of Galileo. As a member of the Florentine camerata (see…
(Encyclopedia) Galileo (Galileo Galilei)Galileogălˌĭlēˈō; gälēlĕˈō gälēlĕˈē [key], 1564–1642, great Italian astronomer, mathematician, and physicist. By his persistent investigation of natural laws…
Destination: Jupiter. Launched: Oct. 18, 1989. Achieved Orbit: Dec. 7, 1995. Mission ended: Sept. 2003. Mission: To study the chemical composition and physical state of the largest planet in the…
(Encyclopedia) Ferraris, GalileoFerraris, Galileogälēlāˈō fār-räˈrēs [key], 1847–97, Italian physicist and electrical engineer. He is noted for his work on alternating current and for his discovery (…
In 1656, Christiaan Huygens, a Dutch scientist, made the first pendulum clock, regulated by a mechanism with a “natural” period of oscillation. Although Galileo Galilei, sometimes credited…
by Tim Porter While generations of cloned mice and asteroids the size of Texas dominate science in popular culture today, a NASA probe is quietly studying one of the most interesting objects in…
GanymedeEuropaCallistoIoAmalthea Jupiter has a total of 63 known satellites. The four great moons of Jupiter were discovered by Galileo Galilei (1564–1642) in Jan. 1610, and are called the…
Why Do Some Objects Fall Faster Than Others?Science Projects for BeginnersPhysical ScienceWhy Do Some Objects Fall Faster Than Others?Do Objects Float Better in Salt Water Than in Fresh Water?…
The Milky Way, the galaxy containing our solar system, is about 100,000 light-years in diameter and about 10,000 light-years thick.
Aphelion: see Orbit.…
