Definition

1. Noun:
   • Cosmonautics: The science and technology of space flight, encompassing the design, development, and operation of spacecraft. This term is often associated with the Russian and Soviet space program.
   • Astronautics: The science and technology of space travel and exploration. This is a broadly used international term synonymous with cosmonautics.

Usage Examples

• Noun:
  • Ngành phi hành vũ trụ đã đạt được những bước tiến phi thường. (The field of astronautics has achieved remarkable advances.)
  • Anh ấy nghiên cứu phi hành vũ trụ tại học viện. (He studies cosmonautics at the academy.)
  • Phi hành vũ trụ là một ngành khoa học đầy thách thức. (Astronautics is a very challenging science.)

Advanced Usage

• The term "phi hành vũ trụ" functions as a compound noun referring to the overall field. It is typically used in formal, academic, or technical contexts related to space science and engineering.

Variants and Related Words

• Phi hành gia (n): Astronaut or cosmonaut (the person who travels in space).
  • Phi hành gia người Việt đầu tiên là Phạm Tuân. (The first Vietnamese astronaut is Pham Tuan.)
• Hàng không vũ trụ (n): Aerospace (encompassing both aeronautics and astronautics).
  • Công ty chuyên về kỹ thuật hàng không vũ trụ. (The company specializes in aerospace engineering.)

Synonyms

• Spaceflight: The action or activity of travelling in space.
• Space science: The scientific study of space and the application of technology for its exploration.

Related Terms

• Kỹ thuật tên lửa (Rocket engineering): A core discipline within astronautics/cosmonautics.
• Thám hiểm không gian (Space exploration): The practical application and goal of much work in astronautics.

1. Cosmonautics, astronautics