All living organisms are composed of cells, some have only one cell and are called unicellular and others have many cells and are known as multicellular. The cell is the smallest part of a living organism. Read more

The moon is the only satellite which rotates around our planet and it takes 28 days to completely go around the Earth. It has a rotation and a revolution movement, just like the Earth. Read more

The Earth, which is the planet we live on, is known as the Blue planet because as much as 3/4 of the its surface is water! And water is so very important because without it, there would be no life. Read more

There are many different theories on how the universe started but the most known is the Big Bang theory, or in other words, the great explosion. This explosion occurred about 10 or 20 billion of years ago when absolutely nothing existed. Read more

The stars are huge gas spheres that shine in the darkness of space. During clear nights we can see thousand of stars in the sky. All stars, along with the rest of the celestial bodies found in the sky are part of the Universe. Read more