|
EchoStar XVI
EchoStar XVI is an American geostationary communications satellite which is operated by EchoStar. It is positioned in geostationary orbit, and will be located at a longitude of 61.5° West, from where it is intended to provide direct broadcasting of high-definition television services to the United States for Dish Network. EchoStar XVI was built by Space Systems/Loral, and is based on the LS-1300 satellite bus. It is equipped with 32 J band (IEEE Ku band) transponders. At launch it had a mass of . It has a design life of fifteen years. It has a common configuration with EchoStar XI and EchoStar XV. The launch of EchoStar XVI was conducted by International Launch Services, using a Proton-M carrier rocket with a Briz-M upper stage. The launch occurred on 20 November 2012, 18:31 UTC from Site 200/39 at the Baikonur Cosmodrome in Kazakhstan. The arts organization Creative Time launched an archival disc created by artist Trevor Paglen called ''The Last Pictures'' into orb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-definition Television
High-definition television (HD or HDTV) describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the generation following standard-definition television (SDTV), often abbreviated to HDTV or HD-TV. It is the current de facto standard video format used in most broadcasts: terrestrial broadcast television, cable television, satellite television and Blu-ray Discs. Formats HDTV may be transmitted in various formats: * 720p (1280 horizontal pixels × 720 lines): 921,600 pixels * 1080i (1920×1080) interlaced scan: 1,036,800 pixels (~1.04 MP). * 1080p (1920×1080) progressive scan: 2,073,600 pixels (~2.07 MP). ** Some countries also use a non-standard CEA resolution, such as 1440×1080i: 777,600 pixels (~0.78 MP) per field or 1,555,200 pixels (~1.56 MP) per frame When transmitted at two megapixels per frame, HDTV provides about five times ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spacecraft Launched In 2012
A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket). On a sub-orbital spaceflight, a space vehicle enters space and then returns to the surface without having gained sufficient energy or velocity to make a full Earth orbit. For orbital spaceflights, spacecraft enter closed orbits around the Earth or around other celestial bodies. Spacecraft used for human spaceflight carry people on board as crew or passengers from start or on orbit (space stations) only, whereas those used for robotic space missions operate either autonomously or telerobotically. Robotic spacecraft used to support scientific re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2012 In Spaceflight
The year 2012 saw a number of significant events in spaceflight. In May and October, the first Commercial Orbital Transportation Services resupply missions took place, during which the SpaceX Dragon became the first private spacecraft to dock with the International Space Station (ISS). In June, China launched the crewed Shenzhou 9 orbital mission, and North Korea achieved its first successful orbital launch in December. 2012 also saw China's first successful asteroid exploration mission, and the landing of NASA's ''Curiosity'' rover on Mars. The Vega and Unha-3 rockets made their maiden flights in 2012, while the Proton-K made its last. A total of 77 orbital launches were attempted in 2012, of which 72 were successful, three were partially successful and two were failures. Five crewed orbital missions were conducted over the course of the year, all successfully, carrying a total of 15 individuals into orbit. The year also saw five EVAs by ISS astronauts. The majority of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surface is made up of the ocean, dwarfing Earth's polar ice, lakes, and rivers. The remaining 29% of Earth's surface is land, consisting of continents and islands. Earth's surface layer is formed of several slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's liquid outer core generates the magnetic field that shapes the magnetosphere of the Earth, deflecting destructive solar winds. The atmosphere of the Earth consists mostly of nitrogen and oxygen. Greenhouse gases in the atmosphere like carbon dioxide (CO2) trap a part of the energy from the Sun close to the surface. Water vapor is widely present in the atmosphere and forms clouds that cover most of the planet. More solar e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trevor Paglen
Trevor Paglen (born 1974) is an American artist, geographer, and author whose work tackles mass surveillance and data collection. In 2016, Paglen won the Deutsche Börse Photography Foundation Prize and he has also won The Cultural Award from the German Society for Photography.The Cultural Award of the Deutsche Gesellschaft für Photographie (DGPh) . Deutsche Gesellschaft für Photographie e.V.. Accessed 7 March 2017. In 2017, he was a recipient of a . Early life and education Paglen earned a B.A. degree in religious studies in 1998 from the |
Disk Storage
Disk storage (also sometimes called drive storage) is a general category of storage mechanisms where data is recorded by various electronic, magnetic, optical, or mechanical changes to a surface layer of one or more rotating disks. A disk drive is a device implementing such a storage mechanism. Notable types are the hard disk drive (HDD) containing a non-removable disk, the floppy disk drive (FDD) and its removable floppy disk, and various optical disc drives (ODD) and associated optical disc media. (The spelling ''disk'' and ''disc'' are used interchangeably except where trademarks preclude one usage, e.g. the Compact Disc logo. The choice of a particular form is frequently historical, as in IBM's usage of the ''disk'' form beginning in 1956 with the " IBM 350 disk storage unit".) Background Audio information was originally recorded by analog methods (see Sound recording and reproduction). Similarly the first video disc used an analog recording method. In the music indu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creative Time
Creative Time is a New York-based nonprofit arts organization. It was founded in 1974 to support the creation of innovative, site-specific, socially engaged artworks in the public realm, particularly in vacant spaces of historical and architectural interest. History Creative Time came to life amidst the deterioration of New York City's infrastructure and social fabric, combined with the mission of the newly established National Endowment for the Arts to promote the role of artists in a democratic society and introduce new audiences to contemporary art. Artists in the late 1960s and early 70s were already experimenting with new media and new forms of art that could exist in the public sphere, outside the purview of conventional art galleries and museums. Early Creative Time programs took over abandoned storefronts and neglected public spaces, such as the Brooklyn Bridge Anchorage and the Great Hall of the Chamber of Commerce in Lower Manhattan. Both landmarks had been unused for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kazakhstan
Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbekistan to the south, and Turkmenistan to the southwest, with a coastline along the Caspian Sea. Its capital is Astana, known as Nur-Sultan from 2019 to 2022. Almaty, Kazakhstan's largest city, was the country's capital until 1997. Kazakhstan is the world's largest landlocked country, the largest and northernmost Muslim-majority country by land area, and the ninth-largest country in the world. It has a population of 19 million people, and one of the lowest population densities in the world, at fewer than 6 people per square kilometre (15 people per square mile). The country dominates Central Asia economically and politically, generating 60 percent of the region's GDP, primarily through its oil and gas industry; it also has vast mineral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrier Rocket
A launch vehicle or carrier rocket is a rocket designed to carry a payload (spacecraft or satellites) from the Earth's surface to outer space. Most launch vehicles operate from a launch pad, launch pads, supported by a missile launch control center, launch control center and systems such as vehicle assembly and fueling. Launch vehicles are engineered with advanced aerodynamics and technologies, which contribute to large operating costs. An orbital spaceflight, orbital launch vehicle must lift its payload at least to the boundary of space, approximately and accelerate it to a horizontal velocity of at least . Suborbital spaceflight, Suborbital vehicles launch their payloads to lower velocity or are launched at elevation angles greater than horizontal. Practical orbital launch vehicles are multistage rockets which use chemical propellants such as Solid-propellant rocket, solid fuel, liquid hydrogen, kerosene, liquid oxygen, or Hypergolic propellants. Launch vehicles are cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EchoStar XV
EchoStar XV is an American geostationary communications satellite which is operated by EchoStar. It is positioned in geostationary orbit, and will be located at a longitude of 61.5° West, from where it is intended to provide direct broadcasting of high-definition television services to the continental United States and Puerto Rico for Dish Network. EchoStar XV was built by Space Systems/Loral, and is based on the LS-1300 satellite bus. It is equipped with 32 J band (IEEE Ku band) transponders, and at launch it had a mass of . It has a design life of fifteen years,; however, it is carrying enough fuel for around twenty years of operations. It has a common configuration with EchoStar XI and EchoStar XVI. The launch of EchoStar XV was conducted by International Launch Services, using a Proton-M carrier rocket with a Briz-M upper stage. The launch occurred from Site 200/39 at the Baikonur Cosmodrome in Kazakhstan, at 18:40 UTC on 10 July 2010. The launch successfully place ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EchoStar XI
EchoStar XI, also known as EchoStar 11, is an American geostationary communications satellite A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth ... which is operated by EchoStar on behalf of Dish Network. It is positioned in Geostationary orbit at a longitude of 110° West, from where it is used to provide direct broadcast satellite, direct broadcasting services to the United States. EchoStar XI was built by SSL (company), SSL, and is based on the LS-1300 satellite bus. It is equipped with 29 transponders, and at launch it had a mass of , with an expected operational lifespan of 16 years. The satellite was launched on 16 July 2008 using a Sea Launch Zenit-3SL carrier rocket flying from the Ocean Odyssey launch platform in the equatorial Pacific Ocean about south of Hawaii. See also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Earth")
