If you mean which planets that Humans have set foot on then Earth is the only one.
We have went to the moon, but it does not count as a planet.
Human made space craft have been to every planet in the Solar System. We have on en route to Pluto right now.
No. Other stars have been found to have planets orbiting them.
As of now, a total of 12 astronauts have walked on the surface of various planets in our solar system. These missions include the Apollo moon landings and Mars rover missions. There are plans for future manned missions to Mars and potentially other planets as well.
rocks
People want to explore other planets to expand our understanding of the universe, to discover if life exists beyond Earth, and to potentially find resources that could benefit humanity in the future. Exploration of other planets also allows us to push the boundaries of science and technology.
As of now, no human has traveled to other planets in our solar system. All crewed space missions have been limited to the Moon and low Earth orbit. However, unmanned spacecraft have been sent to planets like Mars and Venus for exploration.
Nobody has been to Eris. The only place people have gone is to the moon, not to any of the other planets.
Some people believe that spaceships from other planets have visited Earth, but no one has ever been able to prove it.
NO- People have found water on other planets but there is no life there.
The planets have been around much longer than people.
Other than the Earth, no life has been found on any of the other planets. We are still searching.
Yes. There have been hundreds of planets discovered in other stars in the Milky Way. It has been estimated that the Milky Way likely contains hundreds of billions of planets.
Over 900 planets have been discovered orbiting other stars. These are called exoplanets.
no. no humans have ever been to any of the other planets.
No. Other stars have been found to have planets orbiting them.
rocks
As of now, a total of 12 astronauts have walked on the surface of various planets in our solar system. These missions include the Apollo moon landings and Mars rover missions. There are plans for future manned missions to Mars and potentially other planets as well.
None that we know of.