Satellites are objects in orbit around a planet. There are two different kinds of satellites: natural satellites and artificial satellites. Natural satellites mainly include moons, but can include large orbiting rocks, too (though most non-moons are usually pulled into the planet's atmosphere). Art...
What is the definition of a satellite?2. What are the six main types of satellites?3. Why do you think weather satellites travel in low earth orbit?4. Why do weather satellites have to travel very fast?5. What is the mission of the satellite SOHO?6. Why are scientists using a space...
B Have you ever heard of satellites(卫星)? What are they used for?Satellites are helping to forecast(预报) the weather now. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere,where the weather forms. They send these pictures to ...
An orbiting satellite stays over a certain spot on the equator of (rotating) earth. What is the altitude of the orbit (called a geosynchronous orbit)? Communications satellites are placed in orbits so that they always remain above the same points of the earth's surface. a. What must be th...
From monitoring the health of the world's vegetation to mapping regions struck by natural disasters and supporting urban planning, European Space Agency (ESA) Sentinel-2 satellites are key to observing and understanding our planet. Check out facts to lea
GNSS are more than the satellites orbiting Earth. The multiple groups of satellites, known as constellations, broadcast signals to master control stations and users of GNSS across the planet. These three segments – space, control and user – are all considered part of GNSS. But most frequently...
根据短文内容,判断下列句子正(T)误(F)。( )1. Satellites move around the Earth.( )2. In satellites' family, there are many members.( )3. Satellites have the same job.( )4. Satellites see changes in clouds, oceans, land and ice. ...
A 4What types of animals are in the ocean?How many are there? Oceanographers studied and counted animals for ten years to discover the answers. They looked at all the world's oceans from the North Pole to the South Pole.They counted more than 30,000 species in more than 30 million ...
As dangerous as the latter sounds, we're largely protected from its effects by Earth's geomagnetic field, as are the majority of satellites in orbit around the planet. As a consequence, solar radiation storms are only a really serious problem for deep space missions. ...
Satellite internet uses a network of satellites that orbit the Earth in space. The satellites are typically positioned in geostationary orbit, which means they remain in a fixed position relative to the Earth’s surface, about 22,000 miles above the Equator. The system involves three main compone...