Allison Kipta's Library tagged diego_garcia →  View Popular, Search in Google

Stealing A Nation reveals the extraordinary story of the secret expulsion of the entire population of the Chagos islands in the Indian Ocean by successive British governments, so that the principal island, Diego Garcia, could be handed to the United States as a major military base. It is from this base that American aircraft have attacked Iraq and Afghanistan.

sociology geography history diego_garcia

"Diego García is a coral atoll and the largest island in terms of land area, of the Chagos Archipelago. It is part of the British Indian Ocean Territory. The island is located in the Indian Ocean, about 1,600 km (1,000 mi) south of the southern coast of India.[1] The closest other countries to Diego Garcia are Sri Lanka and Maldives."

diego_garcia navy geography

"Ground-based Electro-Optical Deep Space Surveillance, or GEODSS, is an optical system that uses telescopes, low-light level TV cameras, and computers. It replaced an older system of six 20 inch (half meter) Baker-Nunn cameras using photographic film.GEODSS tracks objects in deep space, or from about 3,000 mi (4,800 km) out to beyond geosynchronous altitudes. GEODSS requires nighttime and clear weather tracking because of the inherent limitations of an optical system. Each site has three telescopes. The telescopes have a 40-inch (1.02 m) aperture and a two-degree field of view. The telescopes are able to "see" objects 10,000 times dimmer than the human eye can detect. This sensitivity, and sky background during daytime that masks satellites reflected light, dictates that the system operate at night. As with any ground-based optical system, cloud cover and local weather conditions directly influence its effectiveness. GEODSS system can track objects as small as a basketball more than 20,000 miles (30,000 km) in space or a chair at 35,000 miles, and is a vital part of USSTRATCOM's Space Surveillance Network. Distant Molniya orbiting satellites are often detected in elliptical orbits that surpass the moon and back (245,000 miles out). Each GEODSS site tracks approximately 3,000 objects per night out of 9,900 object that are regularly tracked and accounted for. Objects crossing the International Space Station (ISS) orbit within 20 miles will cause the ISS to adjust their orbit to avoid collision. The oldest object tracked is Object #4 (Vanguard 1) launched in 1957."

astronomy surveillance diego_garcia