(Encyclopedia) celestial pole, one of the two points at which the earth's axis of rotation intersects the celestial sphere. The celestial pole is important as a reference point in the equatorial…
(Encyclopedia) Wilson, J. Tuzo (John Tuzo Wilson), 1908–93, Canadian geologist and geophysicist, b. Ottawa, Ph.D. Princeton (1936), M.A. Cambridge (1940). He worked for the Geological Survey of…
(Encyclopedia) sidereal time (ST), time measured relative to the fixed stars; thus, the sidereal day is the period during which the earth completes one rotation on its axis so that some chosen star…
HAGEDORN, Thomas Michael, a Representative from Minnesota; born in Blue Earth, Faribault County, Minn., November 27, 1943; graduated from Blue Earth High School, 1961; served in United States…
Tales Of The TitanicClassical MythologyTales Of The TitanicA Titanic StruggleClash of the Titans No doubt about it, the Creation, was a monumental feat. One might have thought that Gaia, Mother…
Sun, Moon & Stars Movement of the heavenly bodies: June 2001
Celestial links · Visibility of the Planets · Sunrise/Sunset, Moonrise/Moonset · Equinoxes and…
WHY ARE OBSERVATORIES LAUNCHED INTO SPACE? HUBBLE SPACE TELESCOPEFIND OUT MOREA spacecraft launched to observe the Sun, stars, and remote galaxies is called a space observatory. The HUBBLE SPACE…
WHAT ARE THE GALILEAN MOONS? FIND OUT MOREThe biggest planet, Jupiter, is 11 times wider than Earth. It is made mainly of hydrogen and helium. Its rapid spin makes the clouds in its atmosphere form…
(Encyclopedia)
CE5
Worldwide pattern of earthquake activity: The dots indicate the epicenters of all earthquakes recorded during a recent 10-year period.
CE5
earthquake, trembling or shaking…
(Encyclopedia)
CE5
Continental drift (arrows indicate the directions of motion of the landmasses)
A. Proposed reconstruction of the supercontinent Pangaea indicating the major present landmasses
B…
