As with any object, Mars does have gravity. It may not be as strong as on earth, but it is there and it attracts objects to its surface.
It lands on mars and it weighs than thirty eight pounds so it won't float...
Just like Earth's gravity holds you to Earth, and doesn't let you float away, Mars, too, has some gravity (less than Earth), which won't simply let objects float away into space.
there is only one mars rover and NASA invented the mars rover.
The Mars Rover was not discovered it was invented.
Yes, the Mars Rover has cameras to examine the land on Mars.
It lands on mars and it weighs than thirty eight pounds so it won't float...
Just like Earth's gravity holds you to Earth, and doesn't let you float away, Mars, too, has some gravity (less than Earth), which won't simply let objects float away into space.
there is only one mars rover and NASA invented the mars rover.
The US built the Mars Rover
The Mars Rover was not discovered it was invented.
The mars rover was invented at Nasa.
the mars rover Spirit found water or ice on Mars
Yes, the Mars Rover has cameras to examine the land on Mars.
NASA made the mars rover probably because they want to learn about Mars.
No they are different rovers.
mars rover
by rockets