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The Iridium system was designed to be accessed by small handheld phones, the size of a cell phone. While "the weight of a typical cell phone in the early 1990s was 10.5 ounces" [6] (300 grams) Advertising Age wrote in mid 1999 that "when its phone debuted, weighing 1 pound (453 grams) and costing $3,000, it was viewed as both unwieldly and expensive."
Iridium Communications Inc. (formerly Iridium Satellite LLC) is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium operates the Iridium satellite constellation , a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. [ 2 ]
NASA, the U.S. space agency, initially estimated ten days after the collision that the satellite space incident had created at least 1,000 pieces of debris larger than 10 cm (4 in), in addition to many smaller ones. [15] By July 2011, the U.S. Space Surveillance Network had catalogued over 2000 large debris fragments from the collision. [16]
NASA's satellite applications program launched the first artificial satellite used for passive relay communications in Echo 1 on 12 August 1960. Echo 1 was an aluminized balloon satellite acting as a passive reflector of microwave signals. Communication signals were bounced off the satellite from one point on Earth to another.
Delta II A Delta II launch vehicle launches from Cape Canaveral carrying the Dawn spacecraft. Function Launch vehicle Manufacturer United Launch Alliance Country of origin United States Cost per launch US$51 million in 1987 (7920-10 model) US$137 million in 2018 before retirement Size Height 38.9 m (128 ft) Diameter 2.44 m (8 ft 0 in) Mass 152,000–286,000 kg (335,000–631,000 lb) Stages 2 ...
At 16:56 UTC on 10 February 2009, [11] it collided with Iridium 33 (1997-051C), an Iridium satellite, [12] in the first major collision of two satellites in Earth orbit. The Iridium satellite, which was operational at the time of the collision, was destroyed, as was Kosmos-2251. [13] NASA reported that a large amount of debris was produced by ...
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Iridium: Success Five Iridium satellites 247 August 25, 1997 14:39 Delta II 7920-8 CCAFS LC-17A Advanced Composition Explorer (ACE) 562 kg Heliocentric: NASA: Success Solar wind and cosmic-ray research 248 September 27, 1997 01:23 Delta II 7920-10C VAFB SLC-2W MS-4 LEO: Iridium: Success Five Iridium satellites 249 November 6, 1997 00:30 Delta ...