Astronauts, space travelers, explore the vast universe.

Meaning: People who travel into space learn more about the big area of space that has all the stars, planets, and galaxies.

Choice of Words: Astronauts are people who travel into space. Space travelers are also people who travel into space. Explore means to travel around an area in order to learn more about it. Vast universe means the very large area of space that contains all the stars, planets, and galaxies.

Alternative Expressions

Space explorers, people who travel to space, investigate the big universe.

Meaning: This sentence means that astronauts, or space travelers, go into space to study it.

Choice of Words: **Space explorers** is another way to say astronauts. **People who travel to space** is a more general term that includes astronauts, cosmonauts, and other people who have been to space. **Investigate** means to study something carefully. The **big universe** is the huge space that contains all the stars, planets, and other objects in the universe.

Those who go to space, adventurers in the cosmos, uncover the secrets of the great expanse.

Meaning: This sentence means that astronauts, or space travelers, go into space to discover new things about it.

Choice of Words: **Those who go to space** is a more general term that includes astronauts, cosmonauts, and other people who have been to space. **Adventurers in the cosmos** is a poetic way to describe astronauts. **Uncover** means to find out or discover something. The **great expanse** is the huge space that contains all the stars, planets, and other objects in the universe.

Related Expressions