a precision landing
21Instrumental Landing System (ILS) — Instrument landing system Pour les articles homonymes, voir ILS. L Instrument Landing System (ILS) ou Système d atterrissage aux instruments est le moyen de radio navigation le plus précis utilisé pour l atterrissage IFR. Sommaire 1 Généralités …
22position dilution of precision — The geometric effect resulting from satellites being too close together. Satellites that appear farther apart in the sky provide a more accurate position solution than ones close together. In the latter case, the position accuracy is degraded in… …
23Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
24Mars Science Laboratory — mission 2011 concept artwork Operator NASA Major contractors Boeing Lockheed Martin …
25Mars Exploration Rover — Vue d’artiste d’un rover MER à la surface de Mars …
26Mars Science Laboratory — Vue d artiste du rover MSL. Caractéristiques Organ …
27Mars Astrobiology Explorer-Cacher — Operator NASA Mission type Rover Launch vehicle Atlas V …
28Ice (Johnson novel) — For the Polish novel Lod by Dukaj, see Ice (Dukaj novel). For other uses of Ice , see Ice (disambiguation). Ice   …
29Parachute — This article is about the device. For sports involving a parachute, see Parachuting. For other meanings, see Parachute (disambiguation). Parachutes opening A parachute is a device used to slow the motion of an object through an atmosphere by… …
30Saab 37 Viggen — infobox Aircraft name = AJ/JA 37 Viggen type = Attack, Fighter, Reconnaissance manufacturer =Saab caption = Swedish Air Force JA 37 designer = first flight = 8 February 1967 introduction = 21 June 1971 retired = 25 November 2005 status = Retired… …
