WHAT IS THE SUN MADE OF? WHAT IS THE SURFACE OF THE SUN LIKE? SOLAR ECLIPSESFIND OUT MOREAt the center of the Solar System is the Sun, a vast globe of glowing gas that pours energy into space as…
Source: National Institute of Standards and Technology Physics Laboratory Celestial bodies—the sun, moon, planets, and stars > have provided us a reference for measuring the passage of time…
Read about some of the most significant riots in U.S. history 1898: Wilmington, North Carolina While Democrats held power at the state level in North Carolina, a coalition of white…
(Encyclopedia)
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Precession of the equinoxes (the points at which the earth's celestial equator intersects its ecliptic) is due to the slow rotation of the earth's axis around a perpendicular to…
By Robert I. Tilling
Volcanoes and volcanism are not restricted to the planet Earth. Manned and unmanned planetary explorations, beginning in the late 1960s, have furnished graphic evidence of…
(Encyclopedia) CleomedesCleomedesklēˌōmēˈdēz, klēˌə– [key], fl. 2d cent., Greek astronomer. In a treatise on the circular theory of heavenly bodies, he recorded several hypotheses, e.g., the earth's…
(Encyclopedia) Armstrong, Neil Alden, 1930–2012, American astronaut, b. Wapakoneta, Ohio, grad. Purdue Univ. (B.S., 1955), Univ. of Southern California (M.S., 1970). A U.S. Navy fighter pilot during…
(Encyclopedia) PandoraPandorapăndôrˈə [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XVII (or S17), Pandora is an irregularly shaped (nonspherical…
ICE WORLDPLUTO’S ORBITPLUTO AND CHARONBIOGRAPHY: CLYDE TOMBAUGH American, 1906-1997FIND OUT MOREEven smaller than our Moon, Pluto is by far the smallest planet. It was the last planet to be…
WHAT ARE SATURN’S RINGS? WHAT IS TITAN LIKE? FIND OUT MOREThis giant planet has a magnificent system of shining rings circling its equator. Saturn is the second-largest planet in the Solar System.…
