(Encyclopedia) Bond, George Phillips, 1825–65, American astronomer, b. near Boston, grad. Harvard, 1845. He became the assistant of his father, William Cranch Bond, and in 1859 succeeded him as…
(Encyclopedia)
CE5
Important points in a planet's orbit as seen from the earth
orbit, in astronomy, path in space described by a body revolving about a second body where the motion of the…
AFC West The defending Super Bowl champion Denver Broncos have the same horsepower they had a year ago when they broke the AFC jinx against the Packers in San Diego. They've got the talent, the…
Are the Indiana Jones films historically accurate?
by Mark Hughes Related Links Special Effects Archaeology Ancient History World War II The Holocaust…
Homework Center – Research Skills Finding Information on the Internet by Pearson Education Development Group Subjects » Geography » History » Language Arts » Mathematics »…
(Encyclopedia) crater, circular, bowl-shaped depression on the earth's surface. (For a discussion of lunar craters, see moon.) Simple craters are bowl-shaped with a raised outer rim. Complex craters…
(Encyclopedia) Ptolemaic systemPtolemaic systemtŏlˌəmāˈĭk [key], historically the most influential of the geocentric cosmological theories, i.e., theories that placed the earth motionless at the…
(Encyclopedia) calendar [Lat., from Kalends], system of reckoning time for the practical purpose of recording past events and calculating dates for future plans. The calendar is based on noting…
(Encyclopedia)
CE5
Apsis points, or apsides, in the earth's orbit: At perihelion the earth is closest to the sun and at aphelion it is farthest from the sun.
apsis (pl. apsides), point in the…
