Galileo satellites arrive at Europe's Spaceport
The latest pair of Galileo satellites have touched down at Europe's Spaceport in French Guiana, ahead of their launch together next month.
Oct 8, 2021
0
5
Telecom
The latest pair of Galileo satellites have touched down at Europe's Spaceport in French Guiana, ahead of their launch together next month.
Oct 8, 2021
0
5
Telecom
Engineering researchers have developed a method to use signals broadcast by Starlink internet service satellites to accurately locate a position here on Earth, much like GPS does. It is the first time the Starlink system ...
Sep 23, 2021
0
254
Energy & Green Tech
The downside to solar power is that it's not always sunny and so grid operators have to compensate for energy drops by bringing alternative generation sources online. New research in the International Journal of Powertrains, ...
Sep 16, 2021
0
3
Telecom
In June, the W-Cube nanosatellite began its journey aboard a Falcon 9 rocket from Cape Canaveral to polar orbit. About a month later, it was placed in its orbit at an altitude of 500 kilometers and has now been successfully ...
Sep 6, 2021
0
42
Energy & Green Tech
A new tool that simulates the energy profile of every building in America will give homeowners, utilities and companies a quick way to determine energy use and cost-effective retrofits that can reduce energy and carbon emissions.
Aug 11, 2021
0
157
Telecom
Increasing the amount of trains on Europe's tracks to replace other modes of transport could help reduce CO2 emissions and air pollution. But fitting more trains requires a serious rethink of how trains brake and could move ...
Aug 10, 2021
0
61
Engineering
A vehicle that remains continuously connected even when in remote areas is being road tested in Cornwall in the south west of the UK.
Jul 20, 2021
0
2
Telecom
More than 700 imaging satellites are orbiting the earth, and every day they beam vast oceans of information—including data that reflects climate change, health and poverty—to databases on the ground. There's just one ...
Jul 20, 2021
0
26
Machine learning & AI
Researchers from Skoltech have found a way to help computer vision algorithms process satellite images of the Earth more accurately, even with very limited data for training. This will make various remote sensing tasks easier ...
Jul 15, 2021
0
7
Engineering
Satellite-enabled drones have accelerated the provision of life-saving medical supplies at NHS hospitals in Scotland, boosting the country's efforts to combat COVID-19.
Jul 13, 2021
0
6
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