Cosmologists now conclude that the Big Bang (BB) occurred 13.7 billion years ago. Since it is meaningless to speak of something happening "before" the BB -- there was no time or space to have a "before" -- BB Cosmology makes no statement about what happened that long ago.
About 14.5 billion years old.
The universe did not exist that long ago. The universe as we know it is only 13.7 billion years old.
that 20 billion years ago there was nothing in space but an empty space but then you ask yourself "what is nothing?" I dont know about you but i cant myself visualize noting, can you? No one really knows.
The big bang occurred approximately 13.7 billion years ago.
The big bang theory states that the galaxies in the universe are continuously moving away from each other due to the expansion of space. This expansion suggests that the universe began from a hot, dense state approximately 13.8 billion years ago.
4 billion years ago
Inflation theory. This theory suggests that in the first moments after the Big Bang, the universe underwent a rapid and exponential expansion, causing it to grow exponentially in size. This concept helps explain certain observations of the universe, such as its large-scale structure and uniformity.
The current theories of the big bang suggest an age of any where from 13.5 Billion and 14 Billion years old. The generally excepted figure is 13.8 Billion Years Ago.
All the planets in our solar system formed at about the same time, 4.5 billion years ago. That was about 10 billion years AFTER the Big Bang.
Approximately 13.8 billion years ago.
The big bang occurred approximately 13.7 billion years ago.
The Big Bang is estimated to have occurred around 13.8 billion years ago, based on scientific measurements and observations of the expansion of the universe.