Business
Carlsbad, Calif., satellite Internet provider Viasat said Tuesday that it has landed a contract to deliver in-flight Internet connectivity to more than 300 Delta Air Lines aircraft starting this summer.
Jan 06, 2021
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4
Computer Sciences
When you're responsible for a multimillion-dollar satellite hurtling through space at thousands of miles per hour, you want to be sure it's running smoothly. And time series can help.
Dec 17, 2020
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309
Telecom
When the COVID-19 pandemic settled in for the long haul, and people were no longer tethered to an office building, or even a town, some of them looked to the hills.
Nov 04, 2020
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Internet
Microsoft Corporation has announced on its website the development of a portable data center that can be used to bring cloud computing to remote environments. In their announcement, Microsoft describes their Azure Modular ...
Oct 21, 2020 report
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54
Computer Sciences
When a natural disaster occurs, on-the-ground emergency response teams act quickly to make life-saving decisions. Reducing the response time in such situations is critical to reduce damage impact and save lives. Helpful efforts ...
Aug 25, 2020
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44
Computer Sciences
Russell Kirsch, a computer scientist credited with inventing the pixel and scanning the world's first digital photograph, died Aug. 11 at his home in Portland, Oregon, The Oregonian reported. He was 91.
Aug 14, 2020
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Scientists at Tokyo Institute of Technology and Socionext Inc. have developed a novel transceiver for enabling seamless communication between Earth ground platforms and satellites in the low, middle and geostationary Earth ...
Aug 04, 2020
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Engineering
The apple is Germany's favorite fruit. Pears rank sixth in annual per capita consumption. Yet apple and pear trees both frequently suffer from diseases: Apple proliferation and pear decline are widespread in European fruit ...
Aug 04, 2020
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Telecom
Amazon.com is one step closer to space.
Jul 31, 2020
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110
Machine learning & AI
The past is often the window to our future, especially when it comes to natural disasters. Using data from the 2018 floods that struck southwestern Japan to calibrate a machine learning model, researchers from the International ...
Jul 16, 2020
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In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavor. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon.
The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957. By 2009 thousands of satellites have been launched into orbit around the Earth. These originate from more than 50 countries and have used the satellite launching capabilities of ten nations. A few hundred satellites are currently operational, whereas thousands of unused satellites and satellite fragments orbit the Earth as space debris. A few space probes have been placed into orbit around other bodies and become artificial satellites to the Moon, Venus, Mars, Jupiter and Saturn.
Satellites are used for a large number of purposes. Common types include military (spy) and civilian Earth observation satellites, communication satellites, navigation satellites, weather satellites, and research satellites. Space stations and human spacecraft in orbit are also satellites. Satellite orbits vary greatly, depending on the purpose of the satellite, and are classified in a number of ways. Well-known (overlapping) classes include low Earth orbit, polar orbit, and geostationary orbit.
Satellites are usually semi-independent computer controlled systems. Satellite subsystems attend many tasks, such as power generation, thermal control, telemetry, attitude control and orbit control.
This text uses material from Wikipedia, licensed under CC BY-SA
