posted by ant .
The Big Bang Hypothesis suggests that 20 billion years ago
a) life first formed on the planet earth
b) all matter collapsed into a single ball
c) our sun was born
d) space was much the same as it is today
e) matter did not exist
not a but all matter collapsed into a single ball
Really? That would have been a trick, forming life on Earth about 16 billion years before Earth formed.
Just to put your question in perspective, the age of the Universe is less than 14 billion years ago.
Finally, you can read about this, but there is no evidence that time itself existed before the formation of the Universe (Big Bang). Events before that have no meaning, certainly not in science.