No, not yet at least. The only object that astronauts have been to other than Earth is the moon, which is a moon rather than a planet. There other planets are much farther away, but there are some plans to land people on Mars.
They could, but as of now, no astronauts have travelled to any other planets in the solar system.
I would suppose that the scientist with the super powered telescopes would discover planets before the astronauts would.
All of them, as of right now. The only places we can go at the moment is the moon. The other planets are just way too hot, or way too cold for our suits.
Yes, astronauts can visit the moon at any phase of the lunar cycle. The visibility of the moon's surface features may vary depending on the phase, but this does not prevent astronauts from landing or exploring the moon.
The atmosphere of these planets is not suitable for human exploration. Gases and extreme pressure would instantaneously kill astronauts. Funding and the distance to the gaseous would also be reasons we have not visited Jupiter or Saturn.
Astronauts can see planets, stars, and species.
They could, but as of now, no astronauts have travelled to any other planets in the solar system.
I would suppose that the scientist with the super powered telescopes would discover planets before the astronauts would.
earth
No
The only place astronauts have been other than Earth, is on the moon. When they were there, they did some exploring to see what it was like. They took samples of the soil and rocks to bring back to Earth. They tried to learn as much as they could while they were there. If astronauts get to visit other planets, they would do the same kinds of things.
Astronauts have landed on the Moon, which is not a planet but a natural satellite of Earth. Humans have not yet landed on any other planets in our solar system.
Astronauts have visited the Moon, which is not a planet but a natural satellite of Earth. Other than the Moon, astronauts have not visited any other planets in our solar system. Only unmanned spacecraft have been sent to explore other planets.
Well, to explore space ofcourse. Astronauts go to space to find new planets or such. They observe what is happening.
None. Their had only reach the moon.
mercury
Yes. Astronauts do study the moon. In particular, Astronomers study the planets, stars and outer space.