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Showing posts from August, 2020

Space

In this chapter you will learn: The Solar system What are asteroids and comets ? What is called Red-shift ? What is Big Bang theory ? The Solar system Our solar system is a small part of the Milky Way galaxy. There are eight planets in our solar system. The planets of the solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune . All planets move in elliptical orbits around the sun due to its force of gravitational attraction. Pluto is a dwarf planet. These planets are like objects that orbit stars. The Sun The Sun is the biggest and most massive object in our solar system. The Sun was formed from a cloud of dust and gas pulled together by gravitational attraction. It has a surface temperature of approximately 6000°C. The sun contains 99% of the Solar Systems mass. The Sun is the nearest star to Earth. Moon Moon s