うちゅう宇宙uchuu
1.

The vast, boundless region that contains all celestial bodies, specifically referring to the area beyond Earth's atmosphere.

2.

The complete and interconnected system that encompasses all matter and energy, including everything that exists in our reality.

3.

A conceptual framework or organized system that signifies the order and structure of existence, often associated with philosophical ideas about the universe and its underlying principles.

4.

The expansive space that extends beyond normal atmospheric limits, where specific phenomena and activities related to celestial exploration and travel take place.

5.

A realm that includes hypothetical intelligent beings from other celestial bodies, representing the potential for life beyond Earth.

Example:

宇宙には限りはない。

うちゅうじん宇宙人uchuujin
1.

A hypothetical intelligent life form that is believed to exist on celestial bodies other than Earth, often depicted in science fiction as resembling humans in some way.

2.

A term used metaphorically to describe a person whose behavior or ideas are considered radically different from societal norms, implying they seem foreign or outside conventional understanding.

Example:

みんな宇宙人になったつもりで。

うちゅうせん宇宙船uchuusen
1.

A vehicle designed for human travel and operation in the vastness of outer space, capable of sustaining life for extended periods during its journey.

2.

A manned spacecraft that is launched into the cosmos and travels through the universe, often equipped for a variety of scientific research and exploration activities.

3.

A specially engineered craft that functions in the vacuum of space, enabling astronauts to explore celestial bodies or conduct experiments away from Earth.

4.

A transport system that facilitates travel beyond Earth's atmosphere, incorporating life-support systems to ensure the safety and well-being of crews on missions.

Example:

宇宙船は月を回る軌道を外れている。

うちゅう宇宙uchuuステsute-ションshon
1.

A large artificial satellite designed as a base for activities in outer space, often serving as a hub for interplanetary missions and research.

2.

A human-made structure located in low Earth orbit that provides a platform for scientific research, technology development, and international cooperation in space exploration.

3.

A facility in space where astronauts live and work, conducting experiments and studies in microgravity conditions.

4.

An orbital platform that supports various functions such as vehicle docking, crew habitation, and scientific observation of Earth and the universe.

うちゅうがく宇宙学uchuugaku
1.

The scientific study of the structure, origin, and evolution of the universe, encompassing theories and observations about galaxies, stars, and cosmic phenomena.

2.

A field of inquiry that explores the fundamental principles governing the universe, including its nature, formation, and potential fate, often intersecting with philosophy and astronomy.