Scientifically, the universe appears to be about 14 billion years old. For the universe to be younger or older than that the laws of physics would have to have been different in the past than they are nowadays. Maybe that’s possible, but we don’t have any way of knowing if the laws of physics have changed.
The scientific principle of uniformity says that we assume that things happened in the past just like they happen today ~ that the laws of physics haven’t changed. But it’s still an assumption, we can’t prove it. But again, if the laws of physics haven’t changed, then the universe appears to be about 14 billion years old.
Regardless, it’s not a central issue to the faith of Christianity. When you get to Heaven, God’s not gonna say, “Did you think the universe was young or old…’cause if you thought it was old…you’re outta here”…!
The real issue is did Jesus rise from the dead for your sins, and if you put your trust and confidence in Him for that, then you’re saved, and all of this age of the earth stuff (as interesting as it is) is indeterminate (not determined by the Bible) and again, not central to following Jesus.
