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Which spacecrafts have been to Saturn?
Pioneer 11, Voyager 1 and 2, and Cassini-Huygens (which is presently orbiting Saturn.)
Do you weigh less on earth than in a space ship orbiting 800 kilometers above earth?
No - more on Earth - in orbit you're weightless.
How does weightlessness occur in a space shuttle that is orbiting earth?
Weightlessness is a measure of how much resistance there is between an object and the local gravity. If you are standing on the ground, then there is 100% resistance between you and the pull of gravity. Your weight is equal to the pull of gravity on your mass. When you jump off a tall object, you are falling. You feel weightless because there is no resistance between you and the pull of gravity. When you are in a shuttle orbiting the Earth, both you and the Shuttle are falling in such a way that you never hit the ground. This is called an orbit. You feel weightless because you are falling. You just never hit the bottom like you would on Earth.
Because of free fall astronauts appear this way in orbit?
Weightless
The statement that astronauts on the Moon are weightless is?
The statement that astronauts on the Moon are weightless is true.
Why do astronauts appear to be weightless in a spacecraft orbiting earth?
Free fall
Why do you not feel weightless if flying in a large airplane at a high altitute but if you were in an orbiting spacecraft you would constantly feel weightless?
That's because an orbiting spacecraft is constantly falling, but ... let's hope ... the aircraft you're riding in is not.
Does mercury have any satellites or robot?
it has neither. also there are no man made orbiting spacecrafts.
Which spacecrafts have been to Saturn?
Pioneer 11, Voyager 1 and 2, and Cassini-Huygens (which is presently orbiting Saturn.)
Would a person orbiting earth in a spaceship feel lighter?
Yes. In fact they would feel weightless.
Were else can you find gravity but earth?
Yes. Gravity exists everywhere in the universe as all objects have a gravitational pull. Objects in space do not seem weightless because there is no gravity. Rather they seem weightless because they are in freefall.
Do you weigh less on earth than in a space ship orbiting 800 kilometers above earth?
No - more on Earth - in orbit you're weightless.
Why an object becomes weightless in outer spaceaway from any planet or star?
Gravitational forces are much reduced by distance. Also, they would be fairly well balanced in all directions. However, there would probably still be some detectable gravitational force. The other definition of "weightless" is when an object is still in a gravitational field, but in "free fall". That's why astronauts orbiting Earth are "weightless".
When did they discover spacecrafts on Venus?
Although several spacecrafts have been sent to Venus, no alien spacecrafts have been discovered on its surface.
What are the four us spacecrafts that have been sent to mercury?
You seem to be misinformed. The first US spacecraft was Mariner 10. This was followed by Messenger. There have not been others.
Are objects in freefall weightless?
no. If they were weightless they would not fall.
Is cotton wool weightless?
No. It is light -- not heavy, but it is not weightless.
