Astronauts explored the vast universe.

Meaning: People who travel into space went on a journey to learn more about the big, unknown universe.

Choice of Words: Astronauts are people who travel into space. Explored means to travel around an area in order to learn more about it. Universe is everything that exists, including all of space and time.

Alternative Expressions

Related Expressions

• Astronauts explored vast universe.
• Astronauts, space travelers, explore the vast universe.
• Astronauts explore the vast, mysterious universe.
• Astronauts explored the vast unknown.
• Astronauts explored the vast cosmic frontier.
• Astronaut explored vast universe.
• Astronauts marvel at universe's mysteries.
• Astronauts explored the enigmatic vastness of space.
• Astronauts explored the vastness of space.
• Astronauts explored strange new worlds.