Search

Search results

Displaying 191 - 200

Gravity

How it works and its effect on Earth, the Moon, and the Sun by Mark Hughes Related Links Encyclopedia: Earth The Moon Sir Isaac Newton…

Voyager (U.S.)

Destination: Jupiter and Saturn. Launched: Aug. 20 (Voyager 2) and Sept. 5 (Voyager 1), 1977. Mission: To explore Jupiter and the other outer planets. Launched in 1977, Voyager 1 and…

Sun, Moon, and Stars: August 2001

Movement of the heavenly bodies: August 2001   August Calendar Moon Phase Day Phenomenon Hour (UT) Hour (EST) 3 Neptune is 3 degrees north of the Moon. 1900 3…

Pluto - Quick Profile

News Flash (August 24, 2006)—Pluto Demoted! Read About It Here. Pluto, named after the Roman and Greek god of the underworld, is the coldest, smallest, and outermost planet in our solar…

Brewer's: Jewels

in heraldry. The topaz represents “or” (gold), or the planet Sol. The pearl or crystal represents “argent” (silver), or the planet Luna. The ruby represents “gules” (red), or the planet…

acceleration

(Encyclopedia) acceleration, change in the velocity of a body with respect to time. Since velocity is a vector quantity, involving both magnitude and direction, acceleration is also a vector. In…

Lowell Observatory

(Encyclopedia) Lowell Observatory, astronomical observatory located in Flagstaff, Ariz.; it was founded in 1894 by Percival Lowell, the American astronomer who popularized the idea that Mars might…

Protista

(Encyclopedia) ProtistaProtistaprōtĭsˈtə [key] or ProtoctistaProtoctistaprōˌtŏktĭsˈtə [key], in the five-kingdom system of classification, a kingdom comprising a variety of unicellular and some…