Please do not steal my idea I am about to share with you. I am only 13 years old.
We could build a supercomputer ( or a computer that can handle the amount of processing power needed for this ) that could calculate orbits, planets, how the gravity affects other objects, etc. Basically we input all known events I.E. big bang theory, dinosaurs, extinction, protoplanet hits protoearth and creates moon, Jesus is born, planetary geology, heat, radiation, GRB, life as we know it, and the list goes on and on. We can then make a massive and highly intelligent A.I. that is able to calculate things that happen to reach those events. Say we don't know the missing link with evolution so the A.I. can figure out what series of events could reach to the missing link or calculate every possible human type till the computer figures out that missing link.
The computer would need lots of RAM, graphic cards, ROM, etc. to process everything. In this way space agencies can figure out what series of events can occure for a meteor to hit earth, and possibly even calculate how to prevent such events from occuring. Something like this could tell when life started, or other life could have started. Or calculate when natural disasters would happen such as earthquakes, volcanic eruptions, tsunamis, etc.
Of course this coul mean that the computer would tell the future. I understand that there has been made something like this, the computer that calculated 12 billion years after the big bang to the present day. And thinking of this for a while I have found a paradox which goes as the following: Say we looked several millions of years into the future ( take into account also that one of the events that would be put in was the making of the computer itself ) and decided to build the advanced machinery of the future in the present day. This would mean that those machines would not be created several millions of years in the future, but instead in the present day. And in this way the computer would have never predicted the future machinery in the first place, but in the present. Quite a mind twister right?
Any ways if you could give me advice or anything on such a computer, than let me know. Or if you found a solution to the paradox.