yes. over 100000000000000000000000000000 so called "people" visit earth every year.
Unmanned space probes have flown close by Jupiter, making measurements
and taking pictures. No Human being has ever been anywhere close.
All but Pluto, which is currently being visited.
Approximately : land plants have been around for a half a billion years. The Earth for 4.5 billion years. So your answer is one ninth.
It pulls it towards the Earth.
There are about four space shuttles in the United States. The Space Shuttle is a crewed, partially reusable low Earth orbital spacecraft operated by the U.S. National Aeronautics and Space Administration (NASA).
To prove that organic compounds could have been generated by the conditions of primeval earth
The only planet astronauts have visited is earth. The moon, a satellite, has also been visited.
None They have only been to Moon of Earth
All of the eight planets have been visited or orbited by space probes.
All except for the earth.
no, they haven't the only place in the solar system which actual humans have visited is the earth's moon. The other planets and moons have been visited by probes.
The only planet humans have ever been on is Earth.
No human has ever visited Mars. None have ever been further than Earth's moon.
April 2008 At present the only planet in our solar system that has not been visited (either by an orbiting spacecraft or flyby spacecraft) has been the recently planet downgraded body of Pluto. There is a mission currently in motion to visit this distant outpost.
earth has never visited another planet
No. No planet other than Earth has been visited by men. We made it to the moon, but no further.
Nobody. we live without anybody/alien coming to earth. as far as we know.......mwhahahaha
There has been no absolute proof that we have been visited by anything or anybody. Until then we can assume we're alone.