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Morelos Satellite System
The ''Morelos'' satellites are a series of Mexican communications satellites. The first two operated between 1985 and 1998 and provided telephony, data, and television services over the territory of the Mexican Republic and adjacent areas. The third is now part of the MEXSAT constellation (sister ship of the MEXSAT-1 lost during launch) but carries the ''Morelos'' name. The original ''Morelos'' satellites were replaced by the Solidaridad Satellite System (''Solidaridad I'', launched 17 November 1993, and ''Solidaridad 2'', launched 17 October 1994) and, following privatisation, by the Satmex Satellite System. Satellites Morelos I Morelos I was Mexico's first communications satellite. It was built and put into orbit under a contract from the Secretariat of Communications and Transport (SCT), the federal ministry responsible for the nation's communications systems. ''Morelos I'', a Hughes Aircraft Corporation HS-376, was launched by the U.S. Space Shuttle '' Discover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satmex
Satmex (Satélites Mexicanos) was a company set up in Mexico in the mid-1990s through 2014 that operated space communication satellites that provide services to the Americas. In 2014, it was acquired by Eutelsat, and Eutelsat now operates the three satellites formerly operated by Satmex. History SATMEX existed as a company from approximately 1997 until 2014, when it was Mergers and acquisitions, acquired by Eutelsat. At the time of the acquisition in 2014, SATMEX had three operating satellites prior to the sale to Eutelsat: Satmex 8, Satmex 6, Satmex 5. The three commsat, communication satellites provide local, regional and continental coverage in C band (IEEE), C band and . Timeline 2016 The Eutelsat 117 West B (former SATMEX9) was launched with the similar ABS 2A, and the pair was operational on June 15, 2016. 2015 Eutelsat 115 West B (former SATMEX 7) was ordered by Satmex but after the acquisition by Eutelsat was renamed. It was built on Boeing 702SP satellite bus tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexsat
The Mexican Satellite System, also known as MEXSAT, is a network of three satellites bought by the Mexican government's Ministry of Communications and Transportation. The three satellites are named Mexsat-1, Mexsat-2, and Mexsat-3. Subsequently, they have also been named Centenario, Morelos III and Bicentenario respectively. Mexsat-1 and Mexsat-2 are twin satellites for mobile communication devices and will operate in the electromagnetic frequencies of the L and Ku bands. Mexsat-3 will operate in the range of the extended C and Ku bands. Together these three satellites will form the whole system, operated by the Ministry of Communications and Transportation. The system is expected to meet the telecommunications needs of the whole country. Two control centres have been built in Hermosillo from which the new satellites will be operated. They were inaugurated by the then-president Felipe Calderón on 29 November 2012. History On 20 August 2009, the National Security Program of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications In Mexico
Mass media in Mexico are regulated by the Secretariat of Communication and Transportation (''Secretaría de Comunicaciones y Transportes or SCT''), a federal executive cabinet ministry and by the Federal Telecommunications Institute (''Instituto Federal de Telecomunicaciones or IFT''). Mexico's communication services market is among the largest in Latin America, liberalized in the 1990s, with the landmark privatization of Teléfonos de México ( Telmex), a previously state-owned monopoly. Since then, new operators have entered the market, but Telmex remains the dominant player. Regulation Founded on 13 May 1891, as the Secretariat of Communications and Public Works, the SCT is divided into three subsecretariats: the Subsecretariat of Infrastructure, the Subsecretariat of Communications and the Subsecretariat of Transportation. The SCT has ceded many of its regulatory functions to the Federal Telecommunications Institute. Radio and television Usage of radio, televisio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1985 In Spaceflight
The following is an outline of 1985 in spaceflight. Launches , colspan="8", January , - , colspan="8", February , - , colspan="8", March , - , colspan="8", April , - , colspan="8", May , - , colspan="8", June , - , colspan="8", July , - , colspan="8", August , - , colspan="8", September , - , colspan="8", October , - , colspan="8", November , - Deep Space Rendezvous EVAs References Footnotes {{Orbital launches in 1985 Spaceflight by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton (rocket Family)
Proton (Russian: Протон) (formal designation: UR-500) is an expendable launch system used for both commercial and Russian government space launches. The first Proton rocket was launched in 1965. Modern versions of the launch system are still in use as of 2022, making it one of the most successful heavy boosters in the history of spaceflight. The components of all Protons are manufactured at the Khrunichev State Research and Production Space Center factory in Moscow and Chemical Automatics Design Bureau in Voronezh, then transported to the Baikonur Cosmodrome, where they are assembled at Site 91 to form the launch vehicle. Following payload integration, the rocket is then brought to the launch pad horizontally by rail, and raised into vertical position for launch. As with many Soviet rockets, the names of recurring payloads became associated with the launch vehicle itself. The moniker "Proton" originates from a series of similarly named scientific satellites, which were amo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reflecting Telescope
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives. Almost all of the major telescopes used in astronomy research are reflectors. Many variant forms are in use and some employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Since reflecting telescopes use mirrors, the design is sometimes referred to as a catoptrics, catoptric telescope. From the time of Newton to the 1800s, the mirror itself was made of metal usually speculum metal. This type included Newton's first designs and eve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
