The Big Bang Theory is the dominant scientific theory about the origin of the universe. According to the big bang, the universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter and in all directions. In 1927, the Belgian priest Georges Lemaître was the first to propose that the universe began with the explosion of a primeval atom. His proposal came after observing the red shift in distant nebulas by astronomers to a model of the universe based on relativity. Years later, Edwin Hubble found experimental evidence to help justify Lemaître's theory. He found that distant galaxies in every direction are going away from us with speeds proportional to their distance. The big bang was initially suggested because it explains why distant galaxies are traveling away from us at great speeds. The theory also predicts the existence of cosmic background radiation (the glow left over from the explosion itself). The Big Bang Theory received its strongest confirmation when this radiation was discovered in 1964 by Arno Penzias and Robert Wilson, who later won the Nobel Prize for this discovery. Although the Big Bang Theory is widely accepted, it probably will never be proved; consequentially, leaving a number of tough, unanswered questions.......... tanu

Answered by tanu at 10:45 PM on August 25, 2007

The Big Bang is a cosmological model of the universe, whose primary assertion is that the universe has expanded into its current state from a primordial condition of enormous density and temperature. The term is also used in a narrower sense to describe the fundamental "fireball" that erupted at or close to time t=0 in the history of the universe.

Answered by rohitud , an ibibo Citizen, at 10:42 PM on August 25, 2007

it is like this tah the sun was a big ball which became unstable and busted into many small pieces which r now planets...and the main ball is sun

Answered by azhar , an ibibo Citizen, at 10:41 PM on August 25, 2007

The Big Bang Theory is the dominant scientific theory about the origin of the universe. According to the big bang, the universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter and in all directions

Answered by ramsheela , an ibibo Advisor, at 10:27 PM on August 25, 2007

Its a theory of an ever expanding universe.It also emphasizes on how the universe was created.

Answered by madhu , an ibibo Citizen, at 10:24 PM on August 25, 2007