satellite which is placed directly above the Equator with a circular orbit and angular velocity identical to that of the Earth

F. Gravity doesn’t disappear because someone leaves the Earth’s surface. Every object in space attracted other object by the force of gravity.

There are eight planets in our Solar System.

Asteroids are small, rocky objects that orbit the Sun.

F. The 1 kg object would fall downwards toward the centre of the Earth.

T. Even people are attracted towards each other by gravity, but this force is so small that it is not noticeable.

Solar power is energy from the Sun, They have solar panels which convert the Sun's energy into electricity that powers the spacecraft.

Proxima Centauri - is actually the nearest star to the Earth.

While there are about 2,000 active satellites orbiting Earth at the moment, there are also 3,000 dead ones littering space

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Satellites with polar orbits are used for monitoring the weather, military applications (spying) and taking images of Earth's surface

Saturn has 82 moons

2.7 Kelvin