As far as has been publicly announced, man-made spacecraft have landed
on the earth, on the moon, and on Mars.
Once per completed mission, the shuttles have landed on Planet Earth.
The space probe landed successfully on Mars, where it collected astrological and atmospheric data.
Space robots have landed on Mars, Venus, the Moon, and Titan, a moon of Saturn. These missions have provided valuable insights into the geology, atmosphere, and potential for life on these celestial bodies.
earth
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.
Once per completed mission, the shuttles have landed on Planet Earth.
mars and venus
The space shuttle landed on Earth, so yes.
before anything it would be NASA. but there were no people yet to land on Mars.
yes, there are space-crafts monitoring all planets in our solar system(and possibly beyond).
The space probe landed successfully on Mars, where it collected astrological and atmospheric data.
Human beings have only ever landed on one planet - the Earth. Humans have walked on the surface of the moon, but the moon is not considered a planet. We have also sent un-manned probes onto the surfaces of mercury, venus and mars, and we have sent orbital space craft to the other planets of our solar system.
earth
Space robots have landed on Mars, Venus, the Moon, and Titan, a moon of Saturn. These missions have provided valuable insights into the geology, atmosphere, and potential for life on these celestial bodies.
No. The atmosphere just gets thicker and thicker until it crushes any space craft that we might send into it. There is no well defined solid surface like we have on earth and other rocky planets.
No
The Voyager probes were deep space probes, sent to scout out the outer planets and deep space, so they never really "landed" on any of the planets although voyager I was sent first voyager II overtook it and encountered Saturn on august 1981.