The Vietnamese word "phi hành vũ trụ" translates to "cosmonautics" or "astronautics" in English. It refers to the science and technology of space travel and exploration. This term encompasses everything related to the design, operation, and management of spacecraft and the activities of astronauts in space.
You can use "phi hành vũ trụ" when talking about space exploration, astronauts, or the technology involved in traveling beyond Earth. It can be used in both formal and informal contexts, such as discussions about space missions, scientific research, or even in conversations about movies and books that feature space travel.
In a more advanced context, "phi hành vũ trụ" can be discussed in terms of its implications for science, technology, and society. For example, you might explore topics like international collaboration in space missions, the future of space tourism, or the ethical considerations of colonizing other planets.
While "phi hành vũ trụ" primarily refers to space travel and exploration, it can also be used in a broader sense to discuss the scientific and technological advancements that make space exploration possible. However, it is not commonly used to refer to other forms of travel or exploration on Earth.