equator geophysical observatory
21Moons of Mars — Color image of Phobos obtaine …
22Coriolis effect — For the psychophysical perception effect, see Coriolis effect (perception). Classical mechanics Newton s Second Law …
23Pendulum — This article is about pendulums. For other uses, see Pendulum (disambiguation). Simple gravity pendulum model assumes no friction or air resistance …
24List of radio propagation topics — This is a list of radio propagation terms. NOTOC A a index A index aa index active prominence active prominence region (APR) active region active surge region (ASR) active dark filament (ADF) AE index Air Force Geophysics Laboratory (AFGL) arch… …
25Titan (moon) — Titan Titan in 2005 by Cassini spacecraft Discovery Discovered by Christiaan Huygens …
261999 Pacific typhoon season — Infobox hurricane season Track=1999 Pacific typhoon season summary.jpg Basin=WPac Year=1999 First storm formed=January 3, 1999 Last storm dissipated=December 16, 1999 Strongest storm name=Bart Strongest storm pressure=898 Strongest storm… …
27telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
28El Niño-Southern Oscillation — El Niño redirects here. For other uses, see El Niño (disambiguation). ENSO redirects here. For other uses, see Enso (disambiguation). The 1997 El Niño observed by TOPEX/Poseidon. The white areas off the tropical coasts of South and North America… …
29Equatorial electrojet — thumb|400px|A snap shot of the Earth’s magnetic field at 400 Km altitude due to the ionsopheric current systems. The equatorial intensification of the magnetic field is due to Equatorial Electrojet (EEJ). EEJ peaks over Indian ocean region at… …
30Ganymede (moon) — Ganymede Image of Ganymede s anti Jovian hemisphere taken by the Galileo probe. Lighter surfaces, such as in recent impacts, grooved terrain and the whitish north polar cap at upper right, are enriched in water ice. Discovery …
