this is my understandig of the big bang first, all the matter in the universe was confined into an extreamly dense ball, then as its entropy increased it exploded. the universe began expanding rapidly and as matter began to collide planets and stars began to form. is this roughly correct? i am in 10th grade and have never taken a physics corse so forgive me for my inaccuracies.
2006-11-07 08:42:09 · 2 answers · asked by daniel T 3 in Science & Mathematics ➔ Physics
is it an explosion or not
2006-11-07 09:06:43 · update #1
It is explosion of Gamma ray that led to the Big Bang as per the theory which is not fully scientifically proved as yet. Because, now also there are Gamma ray explosions take place in the Space from where stars and other Cosmic bodies are formed. Matter formation is billions of light years after the Big Bang.
For more, please read the fascinating book by Carl Sagan, 'Cosmos'.
2006-11-07 15:38:26 · answer #1 · answered by Anonymous · 3⤊ 0⤋
Kinda of. The universe was in a very dense and hot state a long time ago (roughly 13.7 billion years ago ) and then started to expand rapidly. As this happened, the temperature began to drop and matter began to collect together via gravitational forces, so galazies, stars, planets, etc began to form.
This is the very basic.
As for entropy being a factor in the early expansion, I dont think that is the case. It is dwarfed by other considerations. Furthermore, there is no agreement as to what started the big bang or the inital existence of all that dense matter - the so called gravitational singularity.
2006-11-07 17:00:36 · answer #2 · answered by Jim C 3 · 0⤊ 0⤋