Obliquity
61Solstice — For other uses, see Solstice (disambiguation). UTC date and time of solstices and equinoxes[1] year Equinox Mar Solstice June Equinox Sept Solstice Dec day time day time day time day time 2004 20 …
62Inclination — in general is the angle between a reference plane and another plane or axis of direction. The axial tilt is expressed as the angle made by the planet s axis and a line drawn through the planet s center perpendicular to the orbital plane. Orbits… …
63Circle of latitude — Map of Earth Longitude (λ) Lines of longitude appear vertical with varying curvature in this projection, but are actually halves of great ellipses, with identical radii at a given latitude. Latitude (φ) Lines of latitude appear …
64New Chronology (Fomenko-Nosovsky) — The New Chronology is a rewriting of world chronology, based on the contention that conventional chronology is fundamentally flawed. The central concepts of the New Chronology are derived from the ideas of Nikolai Morozov,cite… …
65David Rubincam — David Perry Rubincam Born February 27, 1947 (1947 02 27) (age 64) …
66Cassini's Laws — provide a compact description of the motion of the Moon. They were established in 1693 by Giovanni Domenico Cassini, a prominent scientist of his time.For the original statement of the laws, see cite book |title=Essays on the Motion of Celestial… …
67Planetary habitability — is the measure of a planet s or a natural satellite s potential to develop and sustain life. As the existence of life beyond Earth is currently uncertain, planetary habitability is largely an extrapolation of conditions on Earth and the… …
68Astronomy in medieval Islam — An 18th century Persian Astrolabe, kept at The Whipple Museum of the History of Science in Cambridge, England. Islamic astronomy or Arabic astronomy comprises the astronomical developments made in the Islamic world, particularly during the… …
69Orbit of the Moon — Not to be confused with Lunar orbit in the sense of a selenocentric orbit, that is, an orbit around the Moon The Moon completes its orbit around the Earth in approximately 27.3 days (a sidereal month). The Earth and Moon orbit about their… …
70Dragon Skin — X ray of Dragon Skin Body Armor Dragon Skin is a type of ballistic vest made by Pinnacle Armor. It is currently produced in Fresno, California. Its characteristic two inch wide circular discs overlap like scale armor, creating a flexible vest… …
