The age of the universe and its vast number of stars suggests that extraterrestrial life should be common. If that’s the case, then where is everyone? In this infographic we explore some possibilities.
The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately billion years ago. of the system’s mass is in the Sun.
Human Body Ingredients via imaginaryfoundation: 'The average human has approximately 100 trillion cells and each cell is made of approximately 100 trillion atoms, each of which were originally created in the center of a star.