The OP expressed the central question of this thread as follows*:
1) The Bible contradicts what are now known facts of science.
2) Theologically, the Bible contradicts itself and the beliefs of "bible-believing" Christians.
The second point arises with the wholly orthodox position stated above: that the sacrifice of Jesus essentially abolishes the law of the OT. But that is not what Jesus actually says in, for instance, Matthew 5:
So either Jesus is wrong, or Matthew is wrong in his report, or the OT Law still holds (except, arguably, where explicitly overriden by decisions of the early Church, specifically in regard to diet and circumcision).17 “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfil them. 18 For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished. 19 Therefore whoever relaxes one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever does them and teaches them will be called great in the kingdom of heaven. 20 For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven. (ESV)
* A restate for the benefit of those who think this thread has gone "off-topic".