closest approach distance
51Epsilon Eridani — Starbox begin name=Epsilon EridaniStarbox observe epoch=J2000.0 constell=Eridanus ra=RA|03|32|55.8442cite web url=http://simbad3.u strasbg.fr/sim id.pl?protocol=html Ident=HD+22049 title=HD 22049 Variable of BY Dra type work=SIMBAD… …
52relativity — /rel euh tiv i tee/, n. 1. the state or fact of being relative. 2. Physics. a theory, formulated essentially by Albert Einstein, that all motion must be defined relative to a frame of reference and that space and time are relative, rather than… …
53Calendar of 1997 — ▪ 1998 JANUARY JANUARY 1 Ghanaian Kofi Annan replaces Egyptian Boutros Boutros Ghali in the position of United Nations secretary general. Among those knighted by Queen Elizabeth II in the annual New Year s Day ceremony is pop musician …
54Mars — /mahrz/, n. 1. the ancient Roman god of war and agriculture, identified with the Greek god Ares. 2. Astron. the planet fourth in order from the sun, having a diameter of 4222 miles (6794 km), a mean distance from the sun of 141.6 million miles… …
55Lexell's Comet — D/1770 L1 (Lexell) Discovery Discovered by: Charles Messier Discovery date: June 14, 1770 Alternate designations: 1770 I, P/Lexell, Lexell s Comet Orbital characteristics A Perihelion …
56Comet Hale-Bopp — Infobox Comet name=C/1995 O1 (Hale Bopp) discoverer=Alan Hale and Thomas Bopp discovery date=23 July 1995 designations=The Great Comet of 1997, C/1995 O1 epoch=2450460.5 semimajor=186 AU perihelion=0.91 AU aphelion=371 AU gravitational parameter… …
57Moons of Neptune — Neptune (top) and Triton (bottom), three days after the Voyager 2 flyby Neptune has thirteen known moons, by far the largest of whi …
582007 TU24 — Infobox Planet minorplanet=yes name=mp|2007 TU|24 discovery=yes discoverer=Catalina Sky Survey discovered=October 11, 2007 designations= none mp category=Apollo asteroid, Earth crosser asteroid epoch=February 4, 2008 semimajor=2.044 AU perihelion …
59igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …
60Debye–Hückel theory — The Debye–Hückel theory was proposed by Peter Debye and Erich Hückel as a theoretical explanation for departures from ideality in solutions of electrolytes.[1] It was based on an extremely simplified model of the electrolyte solution but… …
