rezumatul textului bin bang
Răspunsuri la întrebare
Răspuns:
Big Bang is the term used to describe the huge explosion which researchers believe to have occurred 15 billion years ago, and created universul.Materie, energy, space and time - all seen as they were created in a fraction of a second, billions of years ago when there was a tremendous explosion called Big Bang, which created a tremendous heat. No one knows what caused the Big Bang and we can not know what was before him. But even after the event, it is believed that the universe was a tight knot of particles united ten thousand million degrees Celsius. Since that time, the universe began to expand and cool. First formed hydrogen and helium (most common atoms in the universe). During the next billion years formed the first stars and galaxies, joining the force of gravity. Finally, they began to form planets. A discovery made in 1965 seems to support the Big Bang theory. A fixed microwave glow coming from every direction in space. Scientists believe that this is the remains of the fireball cooled, the universe was formed. Scientists have discovered that, besides several neighboring galaxies, all in the space are moving away from us by speed. This suggests that all matter and energy of the universe was once concentrated in a single point before the Big Bang. Universe can expand forever or they can stop the extension by implosion.