天体

1. Origins, structure, and basic meaning

• Structure: 天体 is a noun read てんたい, referring to a celestial or astronomical body, such as a star or planet.
• Basic usage: It can be an object observed through a telescope or the subject of photographs in a reference book.
  • 望遠鏡で遠い天体を観察した。 describes observing a distant celestial body through a telescope; 図鑑にはさまざまな天体の写真が載っている。 says that the guide contains photographs of various astronomical objects.

2. Common pitfalls and similar expressions

• 望遠鏡で観察する
  • で marks the telescope as the instrument used for observation.
• 天体の写真
  • の links the photographs to the various astronomical bodies they depict.
• 天体 and 星
  • 天体 broadly covers objects in space, while 星 is the more everyday word for a star and can have a narrower contextual sense.