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mascon
(Encyclopedia) mascon: see moon.maria
(Encyclopedia) maria: see moon.William the Lion
(Encyclopedia) William the Lion, 1143–1214, king of Scotland (1165–1214), brother and successor of Malcolm IV. Determined to recover Northumbria (lost to England in 1157), he supported the rebellion…New Planetary System
New planet has a mass 45 times that of Earth by Liz Olson Related Links 2007 Year in Review Roundup of Recent Science Milestones, 2007 New Planets and a…Eclipses of the Sun and Moon, 2005
Eclipses of the Sun and Moon, 2005 Note: The day of an eclipse is given in Universal Time (U.T.) and may start a day earlier or later depending on your time zone. Apr. 8. Annular-total…inclination
(Encyclopedia) inclination, in astronomy, the angle of intersection between two planes, one of which is an orbital plane. The inclination of the plane of the moon's orbit is 5°9′ with respect to the…Selene
(Encyclopedia) SeleneSelenesəlēˈnē [key], in Greek mythology and mythology, moon goddess; daughter of the Titans Hyperion and Theia and sister of the sun god Helios. There was no known moon cult…escape velocity
(Encyclopedia) escape velocity, the velocity a body must be given in order to escape the gravitational hold of some other larger body, e.g., the earth, moon, or sun. A body given less than the escape…ephemeris time
(Encyclopedia) ephemeris time (ET), astronomical time defined by the orbital motions of the earth, moon, and planets. The earth does not rotate with uniform speed, so the solar day is an imprecise…Shepard, Alan Bartlett, Jr.
(Encyclopedia) Shepard, Alan Bartlett, Jr., 1923–98, American astronaut, b. East Derry, N.H., grad. Annapolis, 1944. He served on a destroyer during World War II and later had extensive experience as…Trending
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