It never said that in the Bible. It is an inference made by mortal men, so if you would rather believe mortal men than what is in God's Word (the Creation), good luck.
What a lot of people misunderstand is that God's Word was first manifested in the Creation (as a work of Christ, also "the Word"). The Bible came long after the events recorded in it. I don't subscribe to any conflict between Creation and the Bible, but I simply do not believe that mortal men can divine facts from the Bible that are not stated in the Bible. Or that their interpretations of the Bible (His Word) are superior to quantitative understanding of the Creation (His Word).
It never said that in the Bible. It is an inference made by mortal men, so if you would rather believe mortal men than what is in God's Word (the Creation), good luck.