near-earth
121Earth Observing-1 — EO 1 Earth Observing 1 Mission (EO 1) est un satellite de télédétection faisant partie du programme New Millenium de la NASA. Il est destiné à valider de nouvelles technologies utilisées pour les instruments scientifiques embarqués et la plate… …
122Earth pyramid — Pyramid Pyr a*mid, n. [L. pyramis, idis, fr. Gr. ?, ?, of Egyptian origin: cf. F. pyramide.] [1913 Webster] 1. A solid body standing on a triangular, square, or polygonal base, and terminating in a point at the top; especially, a structure or… …
123Near Vertical Incidence Skywave — An NVIS antenna configuration is a horizontally polarized radiating element. Near Vertical Incidence Skywave, or NVIS, is a radio wave propagation method that provides usable signals in the range between groundwave and skywave distances (usually… …
124Near equatorial orbit — A near equatorial orbit is an orbit that lies close to the equatorial plane of the object orbited. This orbit allows for rapid revisit times (for a single orbiting spacecraft) of near equatorial ground sites. See also * List of orbits *… …
125Earth Perihelion and Aphelion, 1999 — ▪ 1999 Earth Perihelion and Aphelion, 1999 Jan. 3 Perihelion, 147,096,800 km (91,404,200 mi) from the Sun July 6 Aphelion, 152,098,500 km (94,509,500 mi) from the Sun Equinoxes and Solstices, 1999 March 21 Vernal equinox, 01:461 June 21 Summer… …
126Earth Perihelion and Aphelion, 2001 — ▪ 2001 Earth Perihelion and Aphelion, 2001 Jan. 4 Perihelion, 147,097,600 km (91,402,000 mi) from the Sun July 4 Aphelion, 152,087,500 km (94,502,600 mi) from the Sun Equinoxes and Solstices, 2001 March 20 Vernal equinox, 13:311 June 21 Summer… …
127Earth Perihelion and Aphelion, 1998 — ▪ Table Earth Perihelion and Aphelion, 1998 Jan. 4 Perihelion, 147,099,830 km (91,403,420 mi) from the Sun July 4 Aphelion, 152,095,600 km (94,507,640 mi) from the Sun Equinoxes and Solstices, 1998 March 20 Vernal equinox, 19:551 June 21 Summer… …
128Earth Perthelion and Aphelion, 1997 — ▪ Table Earth Perihelion and Aphelion, 1997 Jan. 2 Perihelion, 147,094,700 km (91,400,238 mi) from the Sun July 4 Aphelion, 152,103,870 km (94,512,783 mi) from the Sun Equinoxes and Solstices, 1997 March 20 Vernal equinox, 13:551 June 21 Summer… …
