It compresses it. This is the reason why the Earth is the most dense planet in the Solar System.
At what altitude does the Earth's gravity no longer have an effect on the astronauts or the space shuttle?
The most noticeable effect is the tides.
Yes, gravity decreases with the square of the distance.
Earth's tides are caused by the Moon's gravity (in combination with the Sun's).
There is no effect to gravity due to earth fast spins because gravity is other thing and spin of earth is different thing. So we could not compare to each other. Gravity is made of mass of earth and spin of earth is due to sun, as earth revolving around the sun.
it keeps them in place
The effect is very small.
It is the effect of the moon's gravity on earth's oceans.
The international dateline has normal gravity; our time zone conventions have no effect on the gravity of the planet Earth.
The gravity of Mars is about 38% of that on Earth. This means that if you were on Mars, you would weigh less than on Earth because gravity is weaker. However, the gravity of Mars has minimal direct effect on Earth as they are separate celestial bodies with their own gravitational fields.
by reducing the gravity 6times artificialy, nd it is not possible naturaly...
The effect of surface area on gravity on Earth is minimal. Gravity primarily depends on the mass of the Earth and the distance between an object and the Earth's center. Changes in surface area would not significantly affect the gravitational pull experienced by objects on Earth.