Since it is said TF3 has something to do with the space race what if it also includes the Transformer's own space programs? Forgotten by the Autobots. Maybe there were two exploratory programs. One includes the Seven Primes quest for Energon. The other well is the Sentinel Prime expedition, a science mission. In theory the Nemesis is the ship that carried the Fallen and his fellow Primes. Another theory, there is another ship, let's call this the Ark, led by a Sentinel Prime. Something to do with this expedition is detected by Earth scientists leading to the race for the moon.