SUMMARY OF THE EARTH IN SPACE
The solar system consists of our star, the Sun, and everything (that revolves around it) bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
This chapter discussed the important facts about our solar system, which include the planets, average distance from the Sun in kilometre, time taken for a complete revolution round the sun, average diametre in kilometre and their number of moons.
Stars are huge ball of burning gases scattered all over the universe.
The Sun is the largest object in our solar system. It is a hot glowing ball of hydrogen and helium at the centre of our solar system.
The Moon is Earth’s only natural satellite and our closest neighbour in the outer space.
Earth revolves in orbit around the sun in 365 days, 6 hours, 9 minutes with reference to the stars, at a speed ranging from 29.29 to 30.29 km/s.
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