What is the Universe? Everything that exists is part of the universe. Our universe is a large expanse of dust, gas, stars, clouds, galaxies, and life. If you could look at the Entire Universe At once it would look like a giant spider Web, made up of billions of galaxies, And trillions of stars. Can You Imagine How Big The Universe Is?
What Is A Galaxy? There are billions of Galaxies in the Universe. Some are very small with only a few million stars. While others could have as many as 400 billion stars, or even more.
It is dry and extremely hot. Its surface is full of craters.
Venus Venus is 108 million km away from the sun. One rotation (day) takes 243 days and 16 hours. One orbit of the sun is 224.7 days. It is smaller than the Earth and is surrounded by orange clouds of poisonous gas.
Mars Mars is 228 million km away from the sun. One rotation (day) takes 24 hours and 37 minutes. One orbit of the sun is 687 days. The surface of Mars is a cold desert, it is known as the red planet. It has the same amount of land as the Earth but no oceans.
Jupiter Jupiter is 778 million km away from the sun. One rotation (day) takes 9 hours and 50 minutes. One orbit of the sun is 11.84 years. The planet is made up of gas and liquid and has 16 moons. It has a ring around it but it is too dark to be seen from Earth.