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…
(Encyclopedia)
CE5
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…
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…
(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) 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…
(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…
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) crescent, emblematic representation of the quarter moon. The crescent and star, ancient Byzantine symbols that became the emblems of Constantinople, were also assumed as the standard…
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…
rock band One of the seminal rock bands of the 1960s and 1970s. Roger Daltrey on vocals, Pete Townshend on guitar, and John Entwistle on bass played together in earlier incarnations as the Detours…
