* Astronomers don't typically travel into space: Astronomers primarily study celestial objects from Earth-based observatories or space telescopes. They analyze data, not physically journey to the stars.
* Astronauts do space travel: Astronauts, trained for spaceflight, are the ones who journey into space. Their missions can range from a few days to several months depending on the mission's goal.
* Missions vary in length: The International Space Station (ISS) has had astronauts living there for over 20 years, with individual missions ranging from a few months to a year. Other missions, like the Apollo missions to the Moon, were only a few days long.
* Future missions: As space exploration expands, we might see longer space missions, perhaps even multi-year journeys to Mars or beyond.
So, while astronomers might not physically travel into space, the astronauts who help gather data for them have missions of varying lengths, depending on the specific mission.
