From atoms to the Andromeda galaxy
Facts about the human body: From atoms to the Andromeda galaxy - Man is made up of approximately 7,000,000,000,000,000,000,000,000,000 (7 octillion) atoms, each billion years old. For comparison, our galaxy has about 300 billion stars - Most of the atoms that make up our body consist of space. The nucleus at the center of the atom is so small that it is the size of a golf ball in a football stadium. - The atoms that makeup matter are never intertwined. The closer they are to each other, the more their component charges are repelled. It is like trying to bring together the ends of two strong magnets with the same charge. For example, when you sit on a chair - you do not "touch" it. You stand a certain distance from the chair due to the repulsive force on the atoms. - Everything we feel is made of molecules. The largest molecule in nature is the first chromosome in our body. The largest known molecule at the moment is DNA, the first human chromosome. It holds about 10,000,000...