Answer the following question given this paragraph: 

Astronomers use many tools to study things in space. Earth-orbiting telescopes view stars and galaxies from the darkness of space ( Figure below ). They may have optical and radio telescopes to see things that the human eye can't see. Spacecraft travel great distances to send back information on faraway places.


Q: What type of scientist uses earth-orbiting telescopes?

 Choices:

- astrologer

- biologist

- anthropologist

- astronomer

A:
astronomer
