The Universe is a large space that contains everything i.e. all matters and energy, from the smallest particles to the largest particles, whatever in the space is universe. It contains all the planets, stars, asteroids, meteors and all the galaxies. No one knows the size of the Universe. The astronomers believe that the universe is still growing outwards in every direction. Astronomers continue to investigate about it. One way they do this is …
What are planets
Planets are defined as the asteroids which are revolving around any star like in our solar system there are nine asteroids Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto which are revolving around a star that is the Sun. So we call those asteroids as planets. The Earth on which we live is one of nine planets that move round and round the sun.
Why do all the planets look …
A planet is very different from a star. A star is a huge ball of hot gases that gives off heat and light. A planet is a much smaller body that shines by reflected light. Now let’s take a brief look at the sizes of all the planets of our solar system. Let’s start with the planet nearest to the sun and then move outward. The first planet of our solar system is Mercury. Diameter of Mercury is 2,900 miles …