HOGWASH.
The Bible is quite expansive in a list of ways. However, it does not pretend to be a galactic Encyclopaedia Britannica at all.
It presents plenty for us to live an honorable, God fearing life presently and sufficiently maps how we can establish sufficient relationship with God to live with Him eternally. End of story, End of purpose in a lot of respects.
And, . . . . there are HINTS of all manner of things in The Bible. It's wise, however, to avoid building theological castles on hints . . . expecially about complexities as complex as reality--especially galactic reliaty.