Satellite

Satellites can be man-made or natural, like the moon. Since the launch of Sputnik One by the Soviet Union in 1957, numerous man-made satellites have been deployed for various purposes, including communication, astronomy, military applications, and Earth observation.

What does the term 'satellite' commonly refer to?

Can you name a natural satellite mentioned in the text?

What significant event in 1957 is mentioned in relation to satellites?

List some purposes for which man-made satellites are used.

How do satellites contribute to Earth observations?