Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
Emmett Brown built a flying craft to study the comet in greater detail, but Biff Tannen believed it to be an alien spacecraft. When Biff saw the craft hiding in the bushes 25 years later, he made the assumption that Doc must have been an alien.
Behind the scenes
Were the comet to return again 25 years later, it should make an appearance in 2017.