According to Reuters, Europe launched four European Galileo global navigation satellites on Thursday. This is the first time that the Galileo system has launched a navigation satellite in a four-star manner, a step closer to its establishment of a complete global positioning system.
At 10:06 am local time (5:06 am Beijing time), the satellite was launched by the Ariane 5 rocket from the European space station in French Guiana. The European Union will use these satellites to replace some of the US's Global Positioning System (GPS).
According to data from the European Space Agency (ESA), the launch has brought the number of Galileo satellites to 18 (a total of 30 planned). The satellite weighs about 700 kilograms (1543 pounds) and is equipped with antennas and sensors, powered by two 5 square meters (53.8 square feet) of solar wings.
Sixteen years ago, the European Union decided to develop the Galileo system, and the setbacks continued to frustrate – small to planned delays, financing problems, as large as two satellites were launched into the wrong track, and the plan was often questioned whether it was necessary to replace the ready-made GPS.
By 2022, the global market value of satellite navigation services is expected to reach 250 billion euros ($267 billion). The EU's goal is to use Galileo to enter the market. About 6% to 7% of the 16 trillion EU economy depends on the availability of global navigation satellite signals.
The Galileo system will begin offering initial candidate services in the coming weeks. All satellites are expected to be in orbit in 2020. Galileo will provide users with more accurate positioning services than GPS and will be used for search and rescue missions.
According to Ariana Airlines, who is responsible for the launch, the four Galilean satellites launched this time reached the expected orbit of about 24,000 kilometers (14,900 miles) above the Earth about four hours after launch.
This is the first time that the Galileo satellite has been launched using the European Ariane 5 rocket. The previous launch was carried out by the Russian Soyuz rocket. Ariane 5 will launch two satellites for the Galileo system in the next two years.
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