An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth

Satellite is kept moving in its orbit around the Earth; it is due to –

An astronaut whose weight on the Earth is 600 N experiences weightlessness on International Space Station orbiting around the Earth. It means that

If the Moon is brought closer to the Earth such that its distance from the Earth becomes half of the original distance, then the gravitational force of attraction between the Earth and the Moon would…

The Earth travels in its orbit at a speed of approx 4,400 km per hour. Why do we not feel this high speed?

There is no atmosphere on the surface of the moon because