Why Are Satellites Important?
Satellites fly high in the sky, so they can see large areas of Earth at one time. Satellites also have a clear view of space. That’s because they fly above Earth’s clouds and air.
Before satellites, TV signals didn’t go very far. TV signals only travel in straight lines. So they would go off into space instead of following Earth’s curve. Sometimes they would be blocked by mountains or tall buildings.
Phone calls to faraway places were also a problem. It costs a lot and it is hard to set up telephone wires over long distances or underwater.
With satellites, TV signals and phone calls can be sent up to a satellite. The satellite can then send them back down to different spots on Earth.

The Jason-2 satellite orbits Earth. It carries tools and sensors to help scientists study the oceans.
Credits: NASA
Satellites fly high in the sky, so they can see large areas of Earth at one time. Satellites also have a clear view of space. That’s because they fly above Earth’s clouds and air.
Before satellites, TV signals didn’t go very far. TV signals only travel in straight lines. So they would go off into space instead of following Earth’s curve. Sometimes they would be blocked by mountains or tall buildings.
Phone calls to faraway places were also a problem. It costs a lot and it is hard to set up telephone wires over long distances or underwater.
With satellites, TV signals and phone calls can be sent up to a satellite. The satellite can then send them back down to different spots on Earth.

The Jason-2 satellite orbits Earth. It carries tools and sensors to help scientists study the oceans.
Credits: NASA
What Is QD-OLED?: The Pros And Cons Of QD-OLED TVs - RTINGS.com https://share.google/BaUUmAUfdmr4Ofw7m
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What Is QD-OLED?: The Pros And Cons Of QD-OLED TVs
Since 2022, QD-OLED technology has taken the display world by storm, but what is QD-OLED? These TVs deliver the same inky blacks we've all come to expect from OLED displays.