Galactica 1980 S01 E02 Galactica Discovers Earth (2)

"The great ship Galactica, our home for these many years we've endured the wilderness of space. And now, we near the end of our journey: we have, at last, found Earth."

When treacherous Xavier travels back in time, Troy and Dillon must race to capture him before the space-age technology falls into the hands of the Nazis.