Add Yahoo as a preferred source to see more of our stories on Google. Marvel Celebrates the 50th Anniversary of What If? With New Alternate Universe Stories Credit: IGN Believe it or not, Marvel's ...

Marvel Comics has shared a first look at What If...? Secret Wars #1, What If...? Jessica Jones #1, and What If...? Spider-Man ...

A novel theory suggests that the current expansion rate of the universe is not fixed, but was in fact quite different in the early universe—and that the universe could start contracting at some point.

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

Believe it or not, Marvel's long-running What If? series turns 50 this year. That's a lot of alternate universe superhero stories. But there's still plenty more ground left to cover, as Marvel reveals ...