Events in the Universe are often dated from the Big Bang. But the fact is, NOBODY KNOWS what (if anything) happened before the Big Bang. The Big Bang MAY have been the start of time itself; but it is possible that the Universe existed (in some form) forever in the past.
It happened in the center of the universe, for which it is still expanding on the universe.
The big bang began the expansion of spacetime with great rapidity. The Universe began with the Big Bang. In other words both space and time began at the big bang. The big bang started the Universe from the point t=0.
No big bang, no universe, no stars, no life on any planet, nobody here to ask what would've happened without a big bang.
Nobody knows for certain what happened before the Big Bang exploded, or why it exploded when it did explode. Astronomers have determined much of what happened back to the Big Bang, but, Nobody knows anything, about what happened before the massive explosion that started the universe we live in now, and for the last billions of years. There are countless unanswered questions about the pre Big Bang universe that might never be answered.
Right after the big bang happened, the universe was expanding at a speed of light. While it was expanding, it started to cool itself down since the big bang caused the universe to heat up to ridiculous temperature.
It happened in the center of the universe, for which it is still expanding on the universe.
universe started moving away
The big bang began the expansion of spacetime with great rapidity. The Universe began with the Big Bang. In other words both space and time began at the big bang. The big bang started the Universe from the point t=0.
No big bang, no universe, no stars, no life on any planet, nobody here to ask what would've happened without a big bang.
The big bang happened then!
The matter present in the Universe began to become more and more dense and this huge density originates the big bang. That was the beginning of the Universe.
Energy and space and time all came into existence when the universe was created. It happened when the Big Bang happened 13.7 billion years ago. We have no scientific understanding of anything before the Big Bang.
Nobody knows for certain what happened before the Big Bang exploded, or why it exploded when it did explode. Astronomers have determined much of what happened back to the Big Bang, but, Nobody knows anything, about what happened before the massive explosion that started the universe we live in now, and for the last billions of years. There are countless unanswered questions about the pre Big Bang universe that might never be answered.
Right after the big bang happened, the universe was expanding at a speed of light. While it was expanding, it started to cool itself down since the big bang caused the universe to heat up to ridiculous temperature.
For starters, the universe was formed from a big bang not crunch.When the big bang happened a bunch of rocks and gases were in space.The rocks and gases then clumped together and then planets were formed.
In general Big Bang theory puts our currently known universe at about 13 billion years old (that's 13,000,000,000 years.)
Neutrons combined with protons to form the Universe's deuterium and helium nuclei in a process called the Big Bang nucleosynthesis