Business
Apple on Thursday announced a $200 million fund to invest in timber-producing commercial forestry projects, with the goal of removing carbon from the atmosphere while also generating profit.
Apr 16, 2021
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5
Internet
The Google Earth app is adding a new video feature that draws upon nearly four decades of satellite imagery to vividly illustrate how climate change has affected glaciers, beaches, forests and other places around the world.
Apr 15, 2021
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5
Telecom
A laser communications terminal prototype to demonstrate this vision is currently being developed by satellite manufacturer Airbus, working in partnership with the Netherlands organization for applied scientific research ...
Apr 8, 2021
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5
Telecom
Flight passengers will soon be able to connect to their families and colleagues on Earth via low-orbit telecommunications satellites.
Mar 19, 2021
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5
Business
Much like they did with cable in the 1980s and satellite television in the 1990s, the NFL on Thursday made another significant transition in the way its games are viewed.
Mar 19, 2021
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6
Engineering
Modern telecommunication systems rely on satellites to relay signals across the globe quickly and reliably, enabling users to send messages across the world in an instant, watch live television, or—more recently—hold ...
Feb 11, 2021
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Internet
On Nov. 26, seven fishermen aboard a small fishing boat off the coast of Maharashtra in western India were struck with panic when their vessel was damaged and began to sink. The panic was warranted: The boat was too far from ...
Jan 29, 2021
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18
Computer Sciences
Skoltech scientists have developed an algorithm that can identify various tree species in satellite images. Their research was published in the IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.
Jan 28, 2021
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5
Engineering
An ESA-supported effort put an intelligent road up in Finnish Lapland through its paces, assessing its suitability for testing autonomous vehicles in some of Europe's most challenging driving conditions.
Jan 19, 2021
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6
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 6, 2021
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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
